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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]
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.
You can try insecticide dusts like diatomaceous earth, boric acid, and amorphous silica gel in rarely used areas, like attics, basements, and crawl spaces. You can also spray the dust into cracks.
The 2024 IRAC poster of insecticide modes of action includes the majority of chemicals listed below. [5] The pesticide manual provides much information on pesticides. [6] [7] Many of the insecticides in the list are not in use.
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]