For crack and crevice treatments, gel baits can be very effective. Apply gel using a bait gun or syringe in small dabs in cracks and crevices where cockroaches will find it. While they are fresh, bait gels are very effective when placed in locations where they will be found by cockroaches. To remain effective, however, the gels need to be reapplied frequently.
Bait gels dehydrate in about 3 days when left in open air, it is therefore recommended that gels be used indoors only. Baits that are available to homeowners can usually be purchased at most retail outlets that carry garden supplies.
Examples include Stapleton’s Magnetic Roach Food by Blue Diamond, Combat gel bait and prefilled bait stations, and Pre-Empt Professional Cockroach Gel Bait. These products may vary in effectiveness according to cockroach species.
As with sticky traps, insecticidal baits do not attract cockroaches so place them near hiding spaces or where roaches are likely to encounter them when foraging. If the bait stations are labeled for outdoor use, place them around building perimeters, in valve or water meter boxes, and around planters.
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