How to handle $0.00 Invoices

How does everyone here handle printing $0.00 invoices? Do you print them or is there a flag somewhere that we are missing that allows you to not print them. We don’t send them out if the invoice is for zero dollars but they still print wasting paper and time. Any thoughts? We are on 10.1.400.33 moving to 10.2.300.3

We use the Advanced Print Routing rules to filter out zero-dollar invoices.