Yes I have used them for several years and found them to be extremely reliable. The products they use are excellent. It certainly is cheaper than doing it yourself. You are not tied in to any contract but would say it is worthwhile having the four treatments each year. I have reccomended them to several people and they have all been satisfied and seen a great improvement in their lawns. They will come out initially to give a report on the state of your lawn for free and quote a price for each treatment. After each treatment you are given the date of the next treatment. They have always turned up on that date. You are not required to be at home for the treatment provided they have access to your lawn. Everything they require they have with them. Your lawn will soon show improvement.