Guys do yourself a favor and check out Service Auto Pilot. Ive been using them for 2 years now and I switched from grounds keeper pro. Its the best move I have ever made hands down. This is not just a billing software. Service auto pilot actually runs your business. Don't be afraid of the minimal cost. Once you implement it in your business it will make and save you money. Talk with Jonathan and see if its right for you. They even have a free version you can play with. Tell Jonathan Doten's recommended SAP. He may hook you up with some promos.