The Mosquito Squad has been great to work with, and we've been very happy with the results. Our neighborhood has a serious mosquito problem every year. (We have the very aggressive black and white striped mosquitos that breed in moist soil rather than standing water.) Last summer, I couldn't take my newborn daughter outside for two minutes before she and I both had bites. With the sprays, our yard was actually a pleasant place for us to spend time this summer! Our next door neighbor also saw a reduction in mosquitos, even though they didn't get sprayed. Three houses down, they were having the same mosquito problems we usually deal with. The MS recommends spraying every 3 weeks. Because of the cost and because we don't want to overuse pesticides, we tried to wait until we started to notice the mosquito population rising before scheduling another spray. That worked okay, but I do think regular sprays were more effective. My only complaint about the MS is that the cost is pretty high. You can set up a summer schedule for spraying every 3 weeks, and that does reduce the cost a lot, but I prefer not to spray so frequently unless it's needed, such as in July/August or when the weather is especially wet. Even though we didn't do the regular schedule, we did get a small reduction with each subsequent spray, so the first was $84, and the last one we had was $64. Based on the size of our yard, I would feel more comfortable with a $50 price point; that's what we've paid to have our yard sprayed for chiggers in the past. If we were at that price, I would give MS an A+ rating without hesitation. As it is, I'm happy with them, and I'm happy to recommend them, but I will continue to limit my sprays as much as possible due to both cost and chemical factors.