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Rodents have lanolin on their fur that causes tell-tale rub marks in heavily traveled pathways. Lanolin is yellow viscous oil in the fur that is made of fatty acids and esters. It allows rodents to squeeze into tight voids & spaces with great ease.
We know that when we do a rodent inspection that this is one of the signs we look for to determine activity. The more frequently traveled in the same area means there will be a buildup of lanolin. To the untrained eye it looks like oil but to us it is an important find that will aid in control because it tells us that it is a rodent highway.
The attached image shows the rub marks leading under a wooden deck.
by Ryan Metterville, Service Specialist
