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Boric acid roach baits consist of a proprietary blend of attractants. These products are often sold at exterminator or pest supply houses. They are sold at most hardware stores and some big box home improvement or retail stores. Boric acid is harmful if taken in large quantities to humans, children and pets. [13]
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.
Compared to other chemicals used for these purposes, it has the advantages of lack of odor, permanent effect, and low toxicity to humans and pets. [ 4 ] The compound was also shown to significantly reduce dust mite populations in the home when applied as a dilute solution to carpets and upholstery together with regular vacuum cleaning .
Is ortho boric acid as safe as, or safer than, or less safe than other commonly-used pesticides, such as indoor pyrethrin-based insecticides? Is the toxicity of boric acid more specific (to invertebrates or arthropods) or less specific than that of the pyrethrin derivatives? 69.140.164.142 02:06, 15 April 2007 (UTC)
In animals, boric acid/borate salts are essentially completely absorbed following oral ingestion. Absorption occurs via inhalation, although quantitative data are unavailable. Limited data indicate that boric acid/salts are not absorbed through intact skin to any significant extent, although absorption occurs through skin that is severely abraded.
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Borate concentration (giving buffering capacity) can vary from 10 mM to 100 mM. As BBS is used to emulate physiological conditions (as in animal or human body), the pH value is slightly alkaline, ranging from 8.0 to 9.0. NaCl gives the isotonic (mostly used 150 mM NaCl corresponds to physiological conditions: 0.9% NaCl) salt concentration.
Boric acid powder is the most commonly used for this purpose. [16] [17] In the UK, many players use a version of anti-set-off spray powder from the printing industry [citation needed] which has specific electrostatic properties with particles of 50 micrometres in diameter. The powder is made from pure, food-grade vegetable starch. [citation needed]