I sprayed the house yesterday inside and out for quarterly pest control. I know it sounds weird but I used to pay a service to do it, and it was $75.00 a visit. Now I buy for the year a 4-pack of Demon WP, which I believe with shipping cost $8.00 and change. We have a sprayer we bought at Home Depot for like $20.00, and we have been doing this for a few years now. The stuff works great and I love that I save money and it only takes 20 minutes out of my life every 3 months.