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Boric acid is not a bait in the dry form, but rather broadcast as a dust, that is both a toxin and a desiccant. Boric acid is often formulated into a paste. Roach attractants are mixed with the boric acid. It is similar in consistency to toothpaste. Boric acid roach baits consist of a proprietary blend of attractants.
Boric acid is a weak acid, with pK a (the pH at which buffering is strongest because the free acid and borate ion are in equal concentrations) of 9.24 in pure water at 25 °C. But apparent p K a is substantially lower in swimming pool or ocean waters because of interactions with various other molecules in solution.
Boric acid is only marginally more toxic to most lifeforms than normal table salt, with exposure in humans and other mammals widely regarded as being safe. Its use as an insecticide in malarial control (instead of compounds which demonstrate high levels of mammalian toxicity or carcinogenicity) is thus seen as advantageous. [1] [2] [4]
Poisoned bait containing hydramethylnon or fipronil, and boric acid powder is effective on adults. [84] Baits with egg killers are also quite effective at reducing the cockroach population. Alternatively, insecticides containing deltamethrin or pyrethrin are very effective. [84]
It is an insecticide used for extermination and control of household pests such as crickets, roaches, ants, carpenter ants, spiders, silverfish and mosquitoes. In 1975, Baygon introduced Australia’s first surface spray for killing cockroaches, ticks and other crawling insects. Baygon was introduced by the German chemical manufacturer Bayer in ...
The following is a sample recipe for BBS: 10 mM Sodium borate; 150 mM NaCl; Adjust pH to pH 8.2 The simplest way to prepare a BBS solution is to use BBS tablets. They are formulated to give a ready to use borate buffered saline solution upon dissolution in 500 ml of deionized water.