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Irresistible Odors

Monday October 29, 2012

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Mr Pest Control

Question:

In mouse exclusion, my understanding is that when blocking the entrance/exit hole the most important objective is to stop all air drafts. With no air drafts the rodent doesn't realize that a hole exists. If this is correct, what about pheromones? Don't pheromones attract the rodents as well? I use foam to do exclusions and sometimes the rodents chew through, but most of the time they do not.

Mr Pest Control

Answer:

I think that foam is a good immediate way to close off entry points or to fill large holes, but once it dries rats and mice will easily gnaw through it again. Better would be to permanently close that opening as soon as possible with some more impermeable material like metal flashing or caulking or concrete, depending on where the hole is. You might even shove a wad of copper or stainless steel mesh (Univar sells both) into the hole before then filling it with the expanding foam, as mice and rats appear to be deterred from gnawing by the wire materials. 


Odors definitely are an attraction to rodents, including even the odors of foods that may seep thr... Read more

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Please note, Mr. Pest Control is answering questions supplied by PMP customers across North America. His answers are generated from industry and manufacturer-provided information. The answer may not be specific to the laws and regulations for your State, Province, Territory or Country. In addition, products mentioned may not be registered and or available in all areas. Always check with your local Univar office for specific information to your area. Always read and follow label directions.

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