Chemical Control
The keys to controlling cockroaches are sanitation and exclusion: cockroaches are likely to re-invade as long as a habitat is suitable to them, that is, if food, water, and shelter are available, so the conditions that promoted the infestation must be changed.
In addition to sanitation and exclusion, baits can be effective against most species of cockroaches. Pesticide spray products are registered for use on cockroaches and may be used to immediately suppress populations, but they will not provide a long-term solution. Only altering the conditions that allowed the cockroaches to become established will provide a lasting solution. It is important to know that commercially available devices that emit ultrasound to repel cockroaches are not effective.
Insecticides are most effective in controlling cockroaches when combined with sanitation and exclusion practices that limit the cockroach’s ability to establish or reinvade; chemical control alone will not solve the problem. If insecticides are used, they must always be used with extreme care. Indoor chemical control is warranted only if the cockroach population is established, but not for an incidental intruder or two.
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