Pyrethroids ndi mankhwala ophera tizilombo omwe amagwira ntchito mofanana ndi pyrethrins,zomwe zimachokera ku maluwa a chrysanthemum.

Pyrethroids amagwiritsidwa ntchito kwambiri poletsa tizilombo tosiyanasiyana, zomwe zimagwiritsidwa ntchito poletsa udzudzu kupha udzudzu wamkulu.

Permethrin nthawi zambiri amagwiritsidwa ntchito ngati zopatsira tizilombo m'nyumba ndi zakunja, zovala zotsuka, utitiri wa agalu, mankhwala a chiswe, zaulimi ndi zoweta, ndi zinthu zochotsera udzudzu.Permethrin ndiye mankhwala opha udzudzu omwe amagwiritsidwa ntchito kwambiri.

• Ubwino wa Permethrin: Mtengo wotsika, Mphamvu yayikulu, Yotetezedwa ku chilengedwe ndi anthu, zotsalira zochepa.
• Ntchito :
• (1) Ntchentche zazikulu: Ikani 10% Permethrin EC,kupopera 0.01-0.03ml pa m³.
• (2) Udzudzu waukulu : Ikani 10% Permethrin EC, kupopera mbewu mankhwalawa 0.01-0.03ml pa m³.Mphutsi za udzudzu: Sakanizani 1ml ndi 1L 10% Permethrin EC ndi madzi 1L, kupopera mbewu pachithaphwi chomwe timaswana udzudzu.
• (3) Mphepete: Ikani 10% Permethrin EC, kupopera 0.05 ml pa m³.
• (4) Chiswe: Ikani 10% Permethrin EC, kusakaniza 1ml ndi1L madzi, kupopera pa nkhalango.

D-phenothrin nthawi zambiri imagwiritsidwa ntchito poletsa udzudzu wachikulire ndi tizilombo tosokoneza m'nyumba ndi panja m'mabwalo okhalamo komanso malo osangalalira anthu.Malo ogwiritsira ntchito akuphatikizapo malo okhalamo ndi ozungulira nyumba / nyumba, nyumba zamalonda ndi mafakitale, magalimoto oyendera, malo osangalalira, malo odyetserako ziweto, kusamalira ziweto mwachindunji (agalu).

• Ubwino wa D-phenothrin: Wopanda poizoni, Wopha anthu ambiri, Wofalikira, Wotetezeka kwa anthu ndi Zinyama.
• Ntchito :
• (1) Ntchentche zazikulu: Ikani 5% Aerosol Liquid, kupopera 5-10g pa m³.
• (2) Udzudzu waukulu : Ikani 5% Aerosol Liquid, kupopera 2-5 g pa m³.
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