I had a few cust that were late (30, 90 and 2 @ 120!!!) And I was telling mowerman90 this and he caled me a name ...it was about training your cust. This is my first year and I dont want to make waves and lose them so....reluctantly I took mowerman90's advise and gave them all cancellation notices for non-payment. It worked out well, got paid for one by Credit card over the phone on the spot and the two sent a check. The third is a property management company....still fighting that one. The moral of the story is don't let them get over 10 days late, or they will start to think its no big deal and do it time and time again.