I'm doing all my invoices for fall cleanups and in the process discovered I didn't bill at least 3 customers (that I know of) for their fall cleanups last year (2005). 1) $250 cleanup. They moved so I'll never see them again. I do have their email address though. 2) $350 cleanup. One time job. I did 99% of the job There was one area under water that I was going to wait a few days for it to dry out. That never came until spring and I totally forgot about it. 3) $195 cleanup. From a regular customer. I'm not sure how I missed that one, but I did. What would you do for each of these? Half of me says "chock it up as lesson learned" the other half says "you sweat for that money, collect it". I was thinking of emailing #1 and just being very upfront with her (she was a nice lady, husband was a tightwad though). For #2 I was thinking of calling him up and explaining the situation or perhaps ringing his doorbell under the ruse of "just seeing if you needed your leaves done again this year". And #3 I think I will call or email them. Are there time limits on how long I can try to collect since I never created/sent an invoice to them? Would you offer a partial discount just to get some of it?