If it brings you more business, just say “Yes.” This has come up in three different situations. When I’ve done commercial work, work for a property management company or while doing pest repairs for real estate agents.
The problem with billing customers on account is the time delay in receiving payment. Commercial accounts often take up to 90 days to pay and require extra paperwork when requesting payment. Completed pest work is often paid through escrow when the house is sold and can take 30-45 days for receipt. In all cases, the submitted bill has proven to be as good as money in the bank but you must allow for the extra time.