Do you wait till it rains to do an aeration for someone? We see some of these companys go in and get a plug the size of your thumb nail and off they go. We like to get in after a rain where the plugs as long as your thumb. We've tried to have the homeowner water the lawn before hand and it just not as good. True story "had a lady call me once while aerating, her daughter was home and seen me outside. She called her mom at work and told her that I was running a machine in the yard and dropping dog poop all over."