Invoices are sent to you via email (from Quickbooks) unless you have a credit card on file. Balances must be paid in full prior to pet care service. We accept Venmo, Paypal, Visa, Master Card, American Express, Discover and checks. We will not accept post-dated checks. When your credit card is run you will receive an email notification. Your card will be charged prior to the 1st visit of each pet care appointment. If you return early from a trip, you will be refunded in full for any unused visits.