Do any of you leave a bottle of neutral cleaner for you customers after you clean their tile? Seems like it would be a good idea so you don't have to deal with residues when you come back to clean again. Also, you could put your own logo and phone number on it for a little reminder. I give all my carpet custys spotters, but as hard surface cleaning becomes a bigger piece of the pie I thought I should probably be able to give them something as well. What do you think?