We contracted with them for a year. Their service was terrific. Our bug-sprayer person couldn't have been nicer. He did a very thorough job spraying outside the house (and inside when necessary). However their chemicals didn't seem to keep our ant problem at bay. I thought I was contracting for interior/exterior service, turned out it was just exterior, which just doesn't keep the ants out. We had to buy our own spray and spray inside every month to get rid of them.