Here we have an example of a lot of decaying organic matter on the ground this harbors the insects it's winter there looking for a place a warmer place to thrive and actually to burrow down over winter having vegetation like this or mulch chips or pine straw around the foundation of your house draws the insects from your yard to your home, they’ll over winter here or set up right in the soil and eventually before the spring hits and they start breeding these insects end up going right up underneath your siding and giving you pressure inside your home going in through those gaps that you see right on the wall.
