When to charge tenant for clogged toilet

[Max James]

I have included in my leases that all Residents are required to pay for the cost of unclogging a toilet/sink/bathtub if it was their fault.  Yesterday I had to unclog a toilet from what I believe was due to the "flushable wipes" (100% not flushable actually).  

I have a plumber who can unclog anything for $210 and if the toilet needs removed and replaced it bumps the charge up to $305.  The clog yesterday needed toilet removed.

My question is, do you think it makes more sense to bill the Resident directly after it was unclogged, or wait till the lease is up and itemize the clog charge as a deduction on their security deposit?