殺滅床蝨|灑床邊兩日見效 抽乾床蝨水分致死 專家教用滅蝨神器DE粉4大貼士

文: 程家健
2024.11.06

家中多處出現不明的啡色和黑色點點,有機會是木蝨入屋,由於其繁殖速度極快,需要徹底解決並不容易,消委會曾提到可用DE粉滅蝨,將粉末灑在木蝨出沒之處,可使其脫水致死;滅蟲專家任永強接受訪問時表示,DE粉即矽藻土,本身具有很強吸水力,當床蝨經過時黏附在其身上,會於一至兩日內抽乾木蝨內部水分,最後因脫水而死,惟在使用上需要先確保木蝨出沒位置,才能對症下藥。

床蝨繁殖速度快 勿亂用滅蟲煙霧、殺蟲水

床蝨(即木蝨)入屋後,床蝨入屋後會潛伏一至兩周,初期難以察覺,直至被床蝨叮咬感痕癢才發現,其繁殖速度非常快,會向屋內其他地方擴散,需要盡快進行滅蝨工作。由於其繁殖速度極快,故要徹底解決並不容易,如果滅蝨方式不當,例如亂用滅蟲煙霧、殺蟲水等,更有機會弄巧反拙,令蝨患擴散全屋,消委會曾提出可使用天然矽藻土製成的粉劑,施放於床蝨出沒及匿藏處,矽藻土能磨損床蝨表皮,使其脫水而死。


DE粉不受抗藥性影響功效 比殺蟲水好

滅蟲專家任永強接受訪問時表示,DE粉即矽藻土,具有強吸力,呈白色乾粉末狀,一般會用作殺滅床蝨,因床蝨依靠嘴器吸食,身體外層上的毛孔會在爬行時接觸到地面,而DE粉的原理是當床蝨經過時黏附在其身上,會於一至兩日內抽乾床蝨內部水分,最後因脫水而死;因此,對於會飛行的昆蟲來說,接觸到粉末的機會不大,故此一般不會用作殺滅飛蟲。

由於DE粉屬天然物料,與一般殺蟲劑不同,對於抗藥性高的床蝨而言,DE粉能持續發揮功效,不需要持續更換殺蟲劑;而與滅蝨煙霧彈相比,DE粉能直接殺滅床蝨,而非作驅趕,效用更高。雖然DE粉標榜無色無味對人體無害,不過在使用上亦有限制,任永強提到使用DE粉要注意4大要點︰

任永強又提醒,要確保粉末呈乾爽,注意是否受潮濕天氣影響,因DE粉受潮會降低效用,如受潮溝入乾粉末即可。

 

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