BVS seems to be very thorough and very honest. We use them regularly. They always clean up after themselves. We just had a few issues with the system. We just put a new AC unit in this summer, and they put in a French drain. Unfortunately, they didn't quite dig it deep enough, so the water pools a bit around the outside of the house. We're still waiting on them to come back. However, they always try to explain everything to us and I have a fairly easy time scheduling them and getting them out here.