• Call (800) 479-6583
  • Mon-Fri 8am-5pm
  • |
  • Sat 9am-5pm

Common Roach Bait Application Mistakes [Part 2]

Camille Landry posted this on Dec 5, 2016

Roach bait is a solid method for eliminating roaches but there are times where baiting doesn’t produce the desired results. Welcome to the second part of our three part series on Common Roach Bait Application Mistakes. It can be frustrating to spend money on bait to realize they don’t work, so we’re here to explain to you some of the reasons that cockroach baits may fail. Sometimes it could merely be a technique issue and other times it’s for reasons beyond your control. Before we proceed with the list, if you have not read the first part, you can check it out here. Without further ado, let’s continue.


5. Inert Ingredients. 

As they do with active ingredient, cockroaches can adapt and respond differently to inert ingredients within baits, rendering them less effective in some cases. Based  on lab data that showed four different hydramethylnon products tested on roaches ranged from 60 to 80 percent mortality.


In a recent study conducted at North Carolina State University by Dr. Coby Schal that sheds light on cockroaches’ aversion to glucose, a popular material used in roach baits it was stated based on research findings that aversion to glucose is based on genetics and it can eventually spread to offspring which results in large populations of cockroaches which reject glucose and any baits that contain the ingredient. If your bait is rejected by cockroaches, there is a possibility that they reject some of the ingredients and thus it would be best to try a bait with different ingredients.


6. Bait Types.

Gel bait, granular bait, bait stations, dusts and more. There’s a wide selection of cockroach baits out there on the market and with the variety there is out there, it should be taken into account when it comes to roach aversion. Regardless of the active ingredient the bait’s ability to control roaches can be impacted from the type of bait being utilized.


Cockroach expert Dr. Ted Granovsky conducted a presentation where he pointed to a study in which three forms of the same active ingredient were used in different trials in different forms: a dust, a gel bait, and an aerosol. The results for the three are quite different. What does this mean when it comes to using bait in your home or building? You may have to use a mixture of different baits and see what works most effectively.


7. Cockroach Behavior.

Cockroaches are capable of building up behavioral resistance to baits. Bases on their behavioral trails, cockroaches have the potential to develop an aversion to glucose, as noted in #5. In a lab study done on this, scientists were able to resolved the glucose aversion problem by swapping out the glucose with fructose. The roaches would take the bait and thus be poisoned with the bait. While we can’t really control cockroach behavior, we can do a trial and error method like these scientists have done and swap out bait products until we hit a sweet spot where the roaches happily accept the bait.


8. Genetic Aspects.

A reason that you may not be making a dent to the cockroach population with your baiting method might be because of genetics. Cockroach populations as you might already know, love to multiply and this can bring about lots genetic differences and varieties. Roaches can pass down different traits to their offspring and this can result in aversions being inherited by the new generation. 


Aside from bait aversion, cockroach populations can build up resistance to various bait products, in that it will take a stronger dose of active ingredient to be actual lethal to a particular cockroach. This is another aspect of treating roaches that we can’t really control but merely have to adapt towards by changing your control approach. This is also a reason why pest control professionals always state not to use the same control product all the time because eventually the roaches will either not take to it or develop a tolerance for the product.


Stay tuned for part three as we will share with you four more reasons that roach baits fail. In the meantime, if you’re looking for new baits to use for your control program, check out our roach control products here.



If you have yet to check out part one click here!

for more information see part three!

Categories: Cockroaches
To top

Contact Us