We are a pet friendly inn and charge just a nominal additional fee for guests that want to bring their dog. Usually this works out fine, but there are occasional problems. Housekeeping has reported that a current guest's room has dog pee all over the place. Looking for advice from more seasoned innkeepers... Do you charge a refundable deposit? if so, how much? Is a written policy required to charge a fee after the fact or is this kind of thing a "given"? Looking for a diplomatic way to alert guests of damage deposits. Thanks in advance for your responses!