 If you can't remember the last time it's been treated, your house, just get it done. Don't question it. Again, the chemical we use lasts 10 years, and we ride. We don't put the bait stations out and all that away from the house. We actually dig a trench around the perimeter of the house, two-inch trench, and we ride all the way to the footer, and we release the chemical. And, again, that lasts over 10 years, and it's a great chemical. So, again, even if you're building a new home in Delaware, it's not code.