 Dr. Peter Eag, owner of Pool Veterinarian Clinic in Maryland, says it takes 7 to 14 days for your pets to become fully immune. Ask the boarding facility, what vaccinations do you require? And if they say we don't require any vaccinations, that's a red flag. You don't want to go there. Dr. Eag says your pet should have routine evaluations, bring your own food and water, and check out the facility. Nowadays, you can go on the web and look over the entire facility. You can watch live videos of the facility. You can see where the animals will be housed.