Any toilet or pipe penetration in the slab will do
Toilet pipes lead the way in. Pardon the pun. Any penetration in your concrete slab allows that tiny chance that the termites may make their way into your home. Typically not usual but it does happen. This goes for any crack in the slab, have you noticed tile or carpet buckling, it may be a crack. If you replace carpet or linoleum and you see a crack have it treated before putting down new tile. I hate to see drill holes when it was preventable. So if you see something like this, give ProBest Pest Management a call at 480-831-9328.