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If rats want to get in they will! They will gnaw through anything in their path including wood, concrete, and metal! Rats have a total of 16 teeth in their mouth, 12 tiny molars (used for grinding), and four long, sharp, incisors in the front. Rat teeth are amazingly hard. They’re actually harder than copper, platinum and even iron. On the hardness scale the rat’s lower incisors rate 5.5, which is about the same as a steel nail (diamond is 10).
So how much pressure can a rat exhibit? Look at the chart below & be totally amazed!!!
The picture you see is a rat burrow in asphalt. This burrow is right up against the foundation and allows the rats to get inside the building.
General Manager - Staff Entomologist