Grunt® Pest Management
Grunt® Pest Management


A common pest, German Cockroaches pose an unsanitary and potentially dangerous threat to your facility.  Cockroaches have been shown in laboratory tests to harbor and spread numerous types of bacteria. Cockroaches are omnivorous and will feed on any food source they can find, including organic debris in cracks and crevices. They will even live inside something like a bread roll if it is left available to them long enough. Grunt® Pest Management Service Specialists will perform a thorough inspection of your facility to identify any current or potential cockroach issues. 


When cockroaches are present, your Service Specialist will use a low volume of insecticide with a high volume of air, atomizing the mixture in a special nozzle. The atomization nozzle produces a high proportion of ideally-sized insecticide particles in a continuous high-volume air stream. The aerosol penetrates further to reach target insects in the most hidden recesses of cracks, crevices and voids. Once this application is done, your Service Specialist will follow that up by physically removing insects with a vacuum. He/She will then follow that up with a residual insecticide dust application, which prevents permanent harborage.


Your Service Specialist will also apply Insect Growth Regulators (IGR’s) to eliminate pests and keep them from breeding. He/She will also apply these to key areas where cockroaches could gain access to your facility, building a protective barrier to keep these pests out. Your Service Specialists will also place insect monitors in key locations to help identify cockroach activity at subsequent services.


During your service, Grunt® Pest Management Service Specialists will dismantle some equipment pieces to gain access to potential German cockroach harborage areas.  They’ll also perform minor structural repairs such as filling in cracks and crevices, preventing cockroaches from gaining access and improving the structural soundness of your facility.


Once your Service Specialist has eliminated your cockroach infestation, he or she will began utilizing baits, proven to withstand cockroach gel bait aversion, your Service Specialist will also continue the use of Insect Growth Regulators (IGR’s) as well as dusts to help prevent these pest from breeding and from re-infesting your facility. Your Service Specialist will continue to use insect monitors on subsequent visits to monitor your cockroach activity.


Sanitation, Structure and Storage Recommendations

At the end of the service, your Pest Specialist will provide you with a list of sanitation, structural and storage recommendations that will help prevent and prohibit future cockroach activity.


What is Gel Bait Aversion?

Over the past several years, there have been multiple studies done in the pest management industry on “Gel Bait Aversion” – the tendency for a cockroach to avoid taking certain types of gel baits.


For reasons that scientists do not yet understand, bait aversion seems to be more prominent in certain pockets in North America than in others.  Even more interestingly, depending on the population, German cockroaches seem to act out aversion in different ways.  Some will go towards the bait and before getting anywhere near it, move away; others will palpate, or touch it with their antennae, then move away quickly; still others will palpate the bait and move away slowly; and some groups will actually nibble the bait before moving away from it.


Various gel bait manufacturers have been working to identify the ingredients in gel bait matrices that are causing German cockroaches to avoid baits. Newer formulas are proving more effective.


One thing scientists are certain of is that overuse of gel baits was contributing in dramatic ways to gel bait aversion.  Until aversion began, many pest management professionals used it liberally because it was extremely effective in eliminating German cockroaches for many years.  Additionally, the gel baits were so effective and safe to use that they were marketed to consumers, leading to overuse in household pest populations.


What Grunt® Pest Management Does to Combat Bait Aversion

To combat gel bait aversion, Grunt® Pest Management uses an integrated approach, using dry flowable bait, which does not cause aversion, as our primary bait. Dry flowable bait has a long residual life, unlike gel, which can dry out and be unappealing to cockroaches.


Most importantly, Grunt® Pest Management partners with clients to improve floor level sanitation. Studies on gel bait aversion have shown that it is more likely to develop in facilities with poor floor level sanitation. In addition, Grunt® Pest Management advises clients on how to prevent German cockroaches from being introduced from residential environments, via employee belongings, as residential populations of German cockroaches have shown significant aversion issues due to overuse of gel baits.

Grunt® Pest Management

7703 N. Lamar Boulevard

Suite 103

Austin, TX  78752

Phone no.: 512-452-PEST (7378)

Fax no.: 512-733-BUGS (2847)

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