無敵士(disodium octaborate tetrahydrate. DOT)滅蟲既原理：
When the dust gets on the insects, they clean themselves and consume the boron during the cleaning process.
At the levels used in Tim-bor Professional applications, it prevents pest infestation by inhibiting pest metabolism on a cellular basis. The tetrahydroxyborate anion forms a chelate complex with the cis-adjacent hydroxyl groups in the ribose sugar of nicotinamide adenine dinucleotide (NAD), with the cationic nitrogen of the nicotinamide moiety providing electrostatic stabilization of the chelate. In this configuration, NAD and NADP cannot be used by the dehydrogenase enzymes of glycolysis, the pentose phosphate pathway or the tricarboxylic acid pathway, and so the cellular energy generating mechanisms, including adenosine triphosphate production, are shut down.
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我都唔知係比咩咬!已用de粉，係咪唔啱？要用無敵仕至啱？定要兩樣一齊至得？請指教
. 而咬既位置都是不規則的, 没有一連串的. 不過咬中之後就勁腫.
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