Start by arranging a tour of the facility — most will have specific tour times throughout the day. Be leery of any facility that doesn't want you to visit. The dog and cat kennels should be clean, bright, and show signs of care; rusty fences or broken windows are a sign of neglect for the property, which can indicate a similar neglect for the animals.
Staff are just as critical. In speaking with staff members, a clear interest in animals should be evident. If staff seem annoyed by the dogs and cats surrounding them, are short-tempered or curt, you can expect their demeanor to be worse when you leave. Think of the kennel as a type of extended family — choosing the right service means balancing price with the comfort of your dog or cat.