That is what I thought you meant.

I am still evolving as an operator, but the way I handle moles is to set the traps on day one, check them on day two or three, check them at about day 7 to 10, and check and pull on about day 14 to even 21 in cold or dry conditions.. All depending on season and situation, but this seems to work good. Majority of moles is on first check, but it seems like you catch more letting them set awhile after the first rush.I bill based on 4 trips. If I'm tearing them up some clients extend until the catch falls to nothing. I move traps and set on fresh activity of course, at each check. I up the per trip price if it is a golf course sized yard and have a base price for normal sized yards. Costs more "outside normal service area" too.

Time and gas are constant in this business. I don't see plumbers charging "per clog", but I don't mean to start a whole new "by the animal vs. flat fee" argument. The way I figure, I'm going to be the one with my knees in the dirt whether the traps are empty or not. I prefer to get payed for driving and knees in the dirt time.