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Boric acid was first registered in the US as an insecticide in 1948 for control of cockroaches, termites, fire ants, fleas, silverfish, and many other insects. The product is generally considered to be safe to use in household kitchens to control cockroaches and ants.
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]
Borax is also easily converted to boric acid and other borates, which have many applications. Its reaction with hydrochloric acid to form boric acid is: Na 2 B 4 O 7 ·10H 2 O + 2 HCl → 4 H 3 BO 3 + 2 NaCl + 5 H 2 O. Borax is sufficiently stable to find use as a primary standard for acid-base titrimetry. [17]: p.316
Fleas, spiders, termites, flies, centipedes, ants, bedbugs, cockroaches — these icky intruders won't give up. But keeping them away doesn't require expensive chemical pesticides.
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.
Borate-sucrose water baits are toxic to Argentine ants, when the bait is 25% water, with 0.5–1.0% boric acid or borate salts. [ 52 ] [ 53 ] In spring, during a colony's growth phase, protein based baits may be more effective due to much higher demand from the egg-laying queens.
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