Ndodo

Mmene mungagwirire ndi makoswe m'nyumba

Kuwoneka kwa makoswe m'nyumba ya anthu nthawi zonse kumabweretsa nkhondo kumadera ndi anthu okhala kumeneko. Kubalana kwa makoswe kumawoneka pafupi ndi mphezi yofulumira, iwo amachititsa phokoso, amawombera, amawononga chakudya, ndipo osakondweretsa kwambiri ndi owopsa ndi onyamula mitundu yoposa 70 ya matenda. Sizowonongeka ndi makoswe - poyandikana ndi anthu zaka mazana angapo, makoswe adzipangitsanso okha misampha yosiyanasiyana, motero lero ndi kofunika kugwiritsa ntchito njira zamakono komanso zothandiza.

Nchifukwa chiyani makoswe akuwoneka

Makoswe amayesa kukhala pafupi kwambiri ndi anthu. Kumene anthu amakhala, nthawizonse amadya chakudya choyenera kwa iwo; makamaka m'nyumba zapakhomo (malo osungiramo zinthu, zipinda zam'munsi ndi zipinda zapansi), komwe kungakhale matumba a tirigu, mbatata, shuga, ufa ndi zakudya zina, zomwe makoswe angakonde kudya. Choncho, yankho la funso loti mumakhala ndi makoswe, ndiko kukhalapo kwa zinthu zabwino.

Mukudziwa? Chiwerengero cha makoswe padziko lonse lapansi ndi 2 kuchuluka kwa chiwerengero cha anthu.

Mankhwala ogulidwa

Njira imodzi yogwiritsira ntchito makoswe ndiyo kugwiritsa ntchito mankhwala apadera ndi ziphe, zomwe zimapezeka m'mabuku a pa intaneti kapena m'sitolo iliyonse yapadera.

Posankha mankhwala ophera tizilombo, muyenera kumangoganizira zogwira mtima, malingaliro ndi machitidwe ake enieni, komanso mauthenga ophatikizidwa ndi chitetezo komanso zotsatira zake.

Ngati nthata zikuwoneka pa tsamba, zomera zonse zidzasokonekera ndipo siziyenera kukumbukira kuti akhoza kusamukira m'nyumba. Tikukulimbikitsani kuti muwerenge momwe mungachotsere tizirombo kudziko, kunyumba ndi kumunda, komanso mudzidziwe nokha ndi zenizeni za rodenticide pogwiritsa ntchito makoswe.

Ndalama za ndalama

Masiku ano, njira zowonjezera komanso zothandiza za makoswe ndizo zotchedwa "mbadwo wachiwiri" mankhwala omwe amatha kuthana ndi vuto kuyambira nthawi yoyamba (kudyetsa 1).

Kuwongolera ntchito yowasankha bwino kwambiri kumathandiza kuthandizira ndalama zapamwamba (pamsika wotsika) ndalama, zolembedwa pogwiritsa ntchito ma intaneti osiyanasiyana:

  1. "Krysid" - rodenticide yotsika mtengo (gel kapena ufa), 1-naphthylthiourea ili ndi mphamvu yogwira ntchito. Amayamwa m'matumbo a rodent, ndipo kuchokera mmenemo kupita magazi, ndipo mofulumira imayambitsa maselo ofiira a magazi, chifukwa cha tizilombo timene timadwala ndi mpweya womwe umatha tsiku limodzi.
  2. Granulated bait "Thandizo" ndi bromadiolone. Phukusi limodzi la 200-gramu ndilokwanira kuti pasakhale makoswe m'nyumba.
  3. The Nutcracker pa maziko a brotiphacum. Mdima wamdima wobiriwira (nthawi zina wofiira), umatungidwa mu 10 g. Njira zimayamba kuwononga dongosolo lozungulira mthupi ndipo potsiriza, makoswe amafa chifukwa cha magazi ambiri. Kusiyana kwakukulu kwa mankhwala omwe tatchulidwa kale ndi ntchito ya "Nutcracker" osati maola 24, koma pambuyo pa masiku 3-4.
  4. "Mkuntho". Flocoumafen yomwe ili mkati mwake imalepheretsa kuti magazi aziwoneka bwino. Amachita ngati Nutcracker. Granulated briquettes mosavuta anaika kudera lonselo.
  5. "Nambala ya imfa ya nambala 1" - rodenticide, imene brodifacoum ikugwira ntchito. Mankhwalawa ndi phokoso lofewa, lopangidwa mu mapaketi a 100 g. Malingana ndi zotsatira pamtundu wa makoswe, ndi ofanana ndi "Nutcracker" ndi "Storm".

Ndikofunikira! Poika nyambo iliyonse yosankhidwa, m'pofunika kugwiritsa ntchito magolovesi ndi tinyama kuti pasakhale mtundu wa fungo la munthu wotsala pa poizoni.

Malangizo ogwiritsira ntchito ndi zowonetsetsa

Kugwiritsiridwa ntchito kwa mankhwala aliwonse owopsa omwe amachititsa poizoni ayenera kutsogoleredwa ndi kufufuza mwatsatanetsatane za malangizo ogwiritsidwa ntchito, zomwe zidzakuphunzitsani kutsegula phukusi ndikuyika mankhwala kumalo okhalamo, komanso kuonetsetsa kuti zithandizidwe kuti zisamawononge anthu ndi zinyama.

Malo amodzi kwa malangizo onse ndi kupeza malo a poizoni:

  • pafupi ndi makoma;
  • pa njira yomwe makoswe amayenda;
  • m'malo odziwika ndi ogwira ntchito;
  • pa malo osungira pafupi.

Malingana ndi mawonekedwe a kutulutsidwa kwa wothandizira makoswe, ntchito zingapo zingathe kusiyanitsidwa:

  • chimbudzi chimagwiritsidwa ntchito ku tirigu kapena tirigu, omwe amadya tizilombo.
  • gel osakaniza ndi kusakaniza ndi chakudya chilichonse chokongola kwa rodent;
  • ufa, mapiritsi ndi granule amangobalalika kumene makoswe amawoneka;
  • Mitsinje yamatsinje imatumizidwa ku khomo la dzenje, imasandulika kukhala thovu, ndipo, pamapeto pake, imayambitsa tizilombo kuti tipewe njira zawo.
Mtunda pakati pa malo omwe nyambo yatsalirayo imasiyanasiyana makamaka kuyambira mamita 3 mpaka 15. Zimadalira molondola njira yogwiritsira ntchito mankhwala ndi chiwerengero cha khola.

Zitetezero za chitetezo:

  • monga tafotokozera pamwambapa, muyenera kutsatira mosamala malangizo a malangizo;
  • Kugwira ntchito ndi poizoni wotsutsana ndi makoswe akutsutsana ndi za mtsogolo ndi amayi oyamwitsa, komanso odwala omwe akudwala matenda a magazi ndi chiwindi, ndi achinyamata osakwana zaka 18;
  • Aliyense amene akukhala pa webusaitiyo ayenera kuchenjezedwa pasadakhale kuti makoswe akuvutitsidwa ndi njira zoyenera zotetezera;
  • Kusunga mankhwala owopsa ayenera kukhala malo osadziwika - osatsekedwa, makamaka, ndi chizindikiro chowoneka bwino "Poizoni!";
  • Zida zomwe zimagwiritsidwa ntchito panthawiyi siziyenera kukhala pafupi kwambiri ndi mita imodzi kupita ku malo osungirako;
  • ndondomeko yoyenera kuika poizoni iyenera kuchitika m'magolovesi, tiezers kapena supuni ya pulasitiki - ngakhale kuyanjana pang'ono ndi malo otseguka a thupi sikuloledwa;
  • pamene amaika ndalama zomwe siziletsedwa kudya, kumwa ndi kusuta;
  • Pambuyo pokonza, mitembo ya makoswe, zotsalira za poizoni ndi mbale zomwe zinali, ziyenera kutenthedwa (ndizotheka kuika maliro, koma osachepera theka la mita mamita).

Zida zogula

Kuyika malo apadera m'nyumba kumathandiza ana ndi zinyama kutetezedwa kuti ziwoneke poizoni chifukwa cha mankhwala omwe amapangidwa ndi anti-rats poison. Zida zoterezi zimagawidwa magetsi ndi mawotchi, ndipo mukhoza kuzigula pa sitolo iliyonse yapadera.

Zida zamagetsi

Zipangizo zamagetsi zapadera sizothandiza (zotsatira pafupifupi 100%) zimaopseza tizirombo ta imvi ndi nambala iliyonse, koma imakhalanso yotetezeka kwa anthu ndi zinyama. Zimapanga mafunde akupanga kapena magetsi opanga magetsi omwe amachititsa kuti pakhale makoswe aakulu, omwe ndi:

  • chitani pa dongosolo lamanjenje;
  • awapangitse mantha;
  • zosokoneza;
  • zimakhudza mavuto a malo, zomwe zimapangitsa kuti zikhale zovuta kufunafuna chakudya.

Zipangizozi zimangokonzedwa - zimakhala ndi bolodi lolamulira ndi jenereta ya magetsi a magetsi kapena mafunde a ultrasonic. Zipangizo zamtengo wapatali zimatha kusintha mafupipafupi, zomwe sizilola kuti tizilombo tizilumikizane nazo, tidziŵe zotsatira zoipa.

Kunja, iwo amawoneka ngati oyankhula wamba kapena ma radio ang'onoang'ono.

Zitsanzo ndi zina za magetsi:

  1. Ultrasound. Amagwira ntchito mozunguliridwa kwambiri ndi mphamvu zopitirira 20,000 Hz. An ultrasound akuwonetseredwa kuchokera kumalo onse omwe amadzaza malo onse - izi zimawopsyeza makoswe. Makoswe okwanira amachoka m'deralo masiku 15-20. Ogwiritsa ntchito makamaka amalangiza zipangizo "Tornado-200" ndi "ElectroCot Classic".
  2. Electromagnetic. Kusokonezeka kwapansi kumakhudzanso machitidwe amanjenje a makoswe, kuwaletsa kuti asafufuze chakudya ndi kukhumudwitsa kwambiri. Malo amkokomo amatha - 200 mita mamita. Tizilombo timachoka ku gawoli kwa milungu iwiri kapena itatu. Chitsanzo ndi chochepa koma chowoneka bwino. Tizilombo Tizilombo toyambitsa matenda (Tizilombo Redthekt).
  3. Kuphatikizidwa. Zimagwirizanitsa zotsatira ziwiri: gawo lamagetsi lamagetsi (maulendo 14-26 mA) ndikumveka phokoso lapamwamba. Ngakhale mtengo wamtengo wapatali, poyerekeza ndi zipangizo zam'mbuyomu, zotsatira za mphamvu zoterezi zimakhala zothandiza - tizirombo timasiya malo okhalamo mofulumira. Anatsimikiziridwa bwino Riddex tizilombo toyambitsa matenda - kuchitapo kanthu mwakachetechete komanso mosamvetsetseka kwa anthu, mu masabata awiri ndi awiri sadzathamangitsa makoswe okha, komanso nyerere ndi tizilombo tina. Komanso nthawi zambiri amalimbikitsa universal scarers EMR-21 ndi EMR-25.

Zipangizo zamakina (misampha)

Cholengedwa ndi munthu zaka zambiri zapitazo, zipangizo zamakono mpaka lero zimapambana kuthana ndi kugwidwa ndi kuwonongedwa kwa nyama zosavomerezeka. Iwo amakhalapo mu mitundu itatu yokha: ngongole-msampha, msampha ndi msampha wamoyo.

M'misika ndi misika mungapeze maulendo osiyanasiyana (misampha) ya makoswe.

Werengani zambiri za momwe mungagwiritsire ntchito rodent pogwiritsa ntchito misampha ya pulasitiki kapena misampha yopangidwa ndi manja.

Zosankha zambiri: matabwa, pulasitiki ndi zitsulo. Zidazi ndizosiyana kwambiri ndi moyo wautumiki, kuphatikizapo luso loti lisakhudze munthu wovulalayo.

Chitsanzo cha msampha wotero ndi msampha wotchuka wa Super Cat., mkati mwake momwe nyamboyo imayikidwa: pambuyo ponyenga yonyenga yagwa mkati, njira yowonongeka imathamanga mwamsanga. Msampha "Super Cat" Msampha ndi chimodzi mwa zipangizo zakale zomwe zimachotsa tizirombo tating'onoting'ono.

Mfundo yogwira ntchito ndi yosavuta: nyamboyi imayikidwa mkati mwa chipangizocho, ngodya yomwe imapweteka kwambiri pamakhudza mbali yofunikira ya injiniyo ndi kuvulazidwa koopsa, kenako imafa.

Zhivolovka ndi msampha wa khola, wokhala ndi khomo lamata. Zhivolovka Pakati pali nyambo, pfungo la nyama yomwe imalowa mu khola. Kenaka chitsulo chosungunuka chimayambitsidwa, chomwe chimathamangira msangamsanga chitseko.

Ndikofunikira! Gwiritsani ntchito mumsampha wa makoswe omwe sangathe. Mwamsanga musanagwiritse ntchito, ayenera kuchiritsidwa ndi yankho la soda, kenako zouma bwino.

Njira za anthu

Pamene kugwiritsira ntchito mankhwala ophera tizilombo tokha sikungatheke pa zifukwa zingapo zapadera, ndipo palibe ndalama zokwanira zowakhazikitsa, ndizomveka kuyesa njira zambiri zomwe zayesedwa zaka zambiri.

Kodi ndizoopsa bwanji?

Chinthu choyamba chimene chingachitidwe kuti "atuluke" makoswe ndikumangodzimitsa okha, kunyumba. Taganizirani zina mwa maphikidwe abwino kwambiri:

  • Sakanizani ufa (ukhoza kusinthidwa ndi wowuma wa mbatata) ndi pulasitala (1: 1), ikani chidebe ndi madzi pafupi ndi kusakaniza;
  • onetsetsani phulusa pansi ndikuwonetsa malo onse komwe makoswe amakhala kawirikawiri;
  • Zitsamba zouma za udzu ndi udzu wakuda zimafalikira kuzungulira chipinda, pafupi ndi mabwalo oyambira ndi mapangidwe - kununkhira kwa zitsamba kumadziteteza kwambiri tizirombo;
  • Pangani chisakanizo cha borax, rosin ndi shuga wofiira, kusakaniza zigawozo mofanana;
  • dulani vinyo wophika, yikani mkate zinyenyeswazi ndipo mudzaze ndi mafuta osapunthidwa a mpendadzuwa.

Zidzakhala zosangalatsa kuti muphunzire kuthetsa njoka, njoka, voles, makoswe a mole, nyerere ndi makoswe pa tsamba lanu.

Msampha wokonzeka kupanga nsomba

Mukhoza kupanga msampha wokhazikika nokha, kunyumba, makamaka popeza sivuta.

Chimene mukusowa:

  • Chitsime kuchokera ku khomo la kutsogolo kapena kamera kuchokera ku njinga;
  • nyambo (makamaka makazi);
  • 12 mm plywood (m'lifupi ndi kutalika 10 ndi 85 masentimita);
  • mzere wodula (umatumikira ngati phokoso);
  • zokopa zingapo, chidutswa cha chithandizo.

Khwerero ndi Gawo Malangizo:

  1. Ikani mapulani a matabwa pakhomopo kuti muthandizidwe, yikani plywood pa njirayi kuti zomangamanga zikhale ngati makina okwana 20 cm.
  2. Onetsetsani pansi pamunsi pa plywood pansi ndi awiri screws.
  3. Mu plywood, pamwamba, pangani mabowo atatu: maonekedwe a nyemba (15 x 6 mm), kotero kuti ndi masentimita 5 kuchokera pamphepete mwake, ndi mbali ziwiri zozungulira (6 mm) pamtunda wa masentimita 12 kuchokera pamphepete mwa plywood.
  4. Lembani mbali imodzi ya nsomba pambali pambali kuti mupange arc yomwe imayenera kusunthira momasuka ndipo potsirizira pake imangomanga ndodo.
  5. Pa mbali imodzi mzerewo ndi wokhazikika; Pachilumbachi, ayenera kusunthira mwachangu pamtunda.
  6. Pa mzere muyenera kupanga kachidutswa kakang'ono, kulikonza ndi matayi apadera (clamp).
  7. Mzere wotsatira uyenera kupita kumapeto.
  8. Pogwiritsa ntchito kansaluko, m'pofunika kukankha dzenje lopangidwa ndi nyemba (mkatikati) ndikuika nthiti (chikhomo) mumalo opangidwira - zidzatseka dzenje, likhale ndi mzere.
  9. Pofuna kukopa makoswe pamwamba, pamtengo waukulu ndi kuyika, muyenera kufalitsa timadzi ta timadzi ta plywood.

Video: momwe mungapangire kampanda kokhala ndi makoswe Zotsatira zake, chipangizochi chidzagwira ntchito motere: makoswe adzafika ku nthiti yayikulu ndikuiwongolera, phokoso lidzamasuka ndilowetsa mu dzenje lopangidwa ndi nyemba, motsogoleredwa ndi kasupe mzerewu udzawongolera, arc idzapita pansi ndi kukasula makoswe.

Njira zotetezera pakupanga mankhwala am'mudzi

Kugwiritsa ntchito njira iliyonse yothetsera makoswe, munthuyo ayenera kutsatira malamulo a chitetezo:

  • kuchepetsa kufikila misampha yokonzekera ana ndi nyama;
  • Osati kugwiritsira ntchito makoswe ogwidwa mumsampha popanda zida zoteteza;
  • Ngati chinyama chimasonyeza zizindikiro za moyo, manja a munthu ayenera kuphimbidwa ndi magalasi akuluakulu a zikopa zomwe zingalepheretse kuluma ndi kuphulika khungu.

Mukudziwa? Malingana ndi chiwerengero, 1/6 gawo la mankhwala opangidwa ndi wamkulu likuwonongedwa ndi makoswe. Khola limodzi lokha lingathe kudya makilogalamu 12 mu chaka chimodzi, ndikuwononga zambiri.

Zinyama

Aliyense amadziwa kuti nyumba ndi nyumba zapakhomo zomwe amphaka amakhala, makoswe nthawi zambiri amadutsa phwando.

Ng'ombeyo ili ndi fungo loopsya komanso luso lofuna kusaka, choncho, popanda mavuto, kwa zaka mazana ambiri zakhala zateteza molimba mtima malo okhalamo kuchokera ku ziphuphu.

Kuphatikizanso, khate la alonda ndi losavuta komanso labwinobwino kuti athetse vuto.

Kutaya muzipinda zosiyanasiyana

Kutaya makoswe m'nyumba yapakhomo kumachitika ponseponse, osati kumangokhala malo okhala, komanso malo omwe chakudya chimasungidwa komanso ziweto zimasungidwa.

Phunzirani momwe mungamangire chipinda chapansi pa nyumba ndikupanga mpweya wabwino m'chipinda chapansi pa nyumba.

Potsatira zotsatira zabwino ndikofunikira kupereka njira yosiyana pa chikhalidwe chilichonse.

Nyumba

Kwa zipinda zomwe anthu amakhala, muyenera kugwiritsa ntchito zinthu zopanda phindu kwazo.

Choyamba, ndibwino kuti muphimbe mipata yonse yokayikira ndi minks, chifukwa ichi mungagwiritse ntchito kusakaniza galasi ndi konkire.

Ngati makoswe amalowa mkati mwadothi (chimbudzi), chivindikirocho chiyenera kutsekedwa mwamsanga ndikuchotsedwera mpaka mphutsi ikubwerera.

Barn

Nkhuku zophika, akalulu, nkhumba, nyumba zina zowonongeka ndi malo okonda makoswe. Poyamba kupewa kupezeka kosasangalatsa, pansi mu chipindacho chimadulidwa ndi chisakanizo cha miyala ndi galasi losweka, ndipo mabowo ndi mipata ali ndi simenti.

Mungagwiritse ntchito poizoni wopanda poizoni, kuzichotsa pamtundu wa ziweto.

Pansi ndi m'chipinda chapansi

M'nyumba zosungiramo zida ndi pansi pa makoswe mungathe kuopseza mwamsanga zofukiza zonunkhira:

  • gwiritsani ntchito mabomba a sulfure;
  • kuwotcha tayala losafunika kuchokera ku galimoto;
  • kukonza ngodya ndi formalin;
  • ikani chiguduli chomwe chinagwedezeka mu turpentine mu mzere wophimba.

Werenganinso momwe mungagwiritsire ntchito "FAS".

Mungathe kugwiritsanso ntchito misampha yokhazikika komanso yogula mankhwala, mankhwala ophera tizilombo ndi mankhwala ovomerezeka.

Kupewa Msuzi

Ngakhale kuti njirayi, yomwe kwa zaka zambiri inalola anthu kuchotsa makoswe, zimakhala zovuta kufikitsa mwamsanga zotsatira, makamaka ngati chiwerengero cha makoswe n'chokwanira. Ndi zophweka komanso bwino kupeŵa maonekedwe a nyama zosafuna ndi zoopsa panyumba, kutsatira njira zosavuta izi:

  • sungani nyumbayo yoyera;
  • kuyendera kawirikawiri malo oyandikana nawo;
  • chomera pamtunda wa tchire ndi masamba ndi timbewu;
  • slits akuwonekera ndi ojambulidwa ndi alabaster ndi galasi losweka;
  • onetsetsani kuti zinyalala, makamaka zonyansa zakudya, sizikusunga pafupi ndi nyumba.

Mukudziwa? Malungo ali ndi kukumbukira bwino, amatha kufotokoza wina ndi mzake za malo a chakudya ndi patali kuti achenjeze za ngozi yomwe ikuyandikira.

Ngati kulimbana ndi makoswe ku gawo lawo kwachitika kwa nthawi yaitali ndipo palibe njira yothandizira, njira yothetsera ingakhale yothandizira msonkhano wapadera wotsutsa. Ngakhale malonda ake ndi okwera mtengo, akutsimikizirani kuti adzakupulumutsani ku nambala iliyonse yamakoswe m'chipinda chilichonse.

Malingaliro ochokera kwa ogwiritsa ntchito intaneti pogwiritsira ntchito Tornado 200 akupanga repeller

Я и не думала, что мне этот прибор вообще понадобится в городской квартире, тем более дом у нас новый, мусоропровод закрыт и не работает, да и живем мы высоко. Но однажды я заметила на балконе мышиный помет. Удивилась я -это не то слово. Balcony ikufufuzidwa, ife taigwiritsa ntchito ngati pantry, pali ndithudi malo opanda ufulu. Mouse imapezeka mu ngodya, kumene kuli njinga. Ochepa, oyenerera))) Ndiye funso linayambira momwe mungayendetsere kutali? Iye anabwera kwa ife kuchokera ku khonde lakunja, ilo limangomaliza khonde lathu, kutchera nafig konkire ndi thovu. Ndinayang'ana pa intaneti kwa ola limodzi ndi theka za obwezera, ndipo ndinayima pa chivomezi 200. Zamtengo wapatali, ndithudi, koma mwinamwake ine sindinkadziwa momwe. Ndinasiya njira zina, koma osati poizoni, ndinaganiza. Anapulumutsidwa tsiku lotsatira ndipo ine ndinangotembenuka mwamsanga. Chipangizocho ndi chaching'ono komanso chowala kwambiri. O, momwe ultrasound ikuchitira pa ine, ine ndikanachoka, ndizosatheka kukhala mu chipinda chimodzi ndi iye! Sindimamvetsera pakhomopo, ndinayima pa khonde kwa milungu iwiri, iwo adangopitilira pokhapokha tikadali kunyumba. Nkhumba zathu zinatuluka nthawi imodzi, zinkawoneka pomwepo))) tinkasokonezeka, koma mayankho ake ndi ofunika kwambiri. Limbikitsani mu zipinda zing'onozing'ono.
smirnova36
//otzovik.com/review_3358793.html

Timakhala m'nyumba yaumwini ndipo vuto la makoswe ndi lodziwika kwa ife, makamaka m'chaka, amathamanga kuchokera kulikonse! Iwo anachipeza icho, kuchiyika pansi, kotero kuti iwo anaphimba nyumba yonseyo ndipo anayiwala, mwezi umodzi iwo anawona kuti mbewa sizikumveka, iwo sanapite! Ndipo tsopano takhala mabwenzi ndi chipangizochi kwa zaka pafupifupi 2 ndikugona bwino! Ndipo mphuno zinasiyidwa osati kwa ife okha, komanso kwa oyandikana nawo, popeza tili ndi kanyumba kwa eni 2 ndi garaji, ngakhale kuti imakhala ngati nyumba yosiyana kuchokera ku nyumba (ilibe maziko enieni). Ndinakondwera kwambiri ndi chipangizocho pamene ndinawona malondawa, chifukwa anali osakayikira za mtundu uwu wa zinthu, anasintha maganizo anga kwambiri. Zikanakhala zabwino ngati ndikuwopa tizilombo!
MilenaMakarova
//otzovik.com/review_851029.html