Baits are one of the easiest and most effective ways to get rid of roaches. They do not work immediately like contact sprays, but baits allow the roach to live long enough to take the poison back to its hiding place and share it with the rest of the nest. The actual amount of time that it takes to eliminate roaches depends a lot on the species involved and the size of the infestation. After a week, you should notice a big improvement, and after about a month, you should be close to getting rid of them all.
By Toby Hudson [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)], from Wikimedia Commons
What are roach baits?
A roach bait is food that has been blended with insecticide. Usually, different types of attractants are used to lure many different species of roaches. Baits come in the form of gels, flowable dusts, and bait stations. Gels are typically the fastest acting, but they can dry out, while other forms can provide longer lasting coverage. A combination is usually the most effective.
How do roach baits work?
Roach baits use common cockroach behaviors against themselves. Roaches will eat nearly anything, including roach feces and dead roaches. By using a delayed toxicant in the bait, roaches will eat it and return to their harborages. Along the way, they will release urine and feces that are contaminated with insecticide that other roaches will then eat. When the roach finally dies in the nest, the other roaches will ingest the body and become poisoned as well. Depending on the insecticide used, kill times may range anywhere from 6 hours to 4 days.
How do you use roach baits?
Placement of roach baits is extremely important. The closer the baits are to the cockroach nests, the more effective they will be. Inspect your home for signs of roaches. Along with live or dead roaches, you may also see molted skins and roach excrement, which may look like ground black pepper. Roaches love dark, moist, secluded areas, so common places to look may include: behind appliances, under sinks, in cabinets and drawers, near your washer and dryer, inside closets, and under water heaters.
When you have located a roach nest, place a small pea-sized amount of gel near it. For hard to reach areas, you can also use flowable dusts or roach tablets. Replace the baits after two weeks so that the bait remains fresh and appealing. Small amounts of bait in several locations tend to work better than large amounts in just a few. Within a few days, you should start to notice an improvement, and hopefully full control can be achieved in a matter of weeks. Traps, liquids, and aerosols can also be used to supplement baits, if necessary.
If you have a roach problem and need more information, see Cockroaches: The Ultimate Guide. You can trust PF Harris for all your home pest control needs.