Vaccination records?

I think it depends on if you have dogs of your own. I have two, so I require that all dogs coming for daycare/boarding have current vaccinations. If getting copies of the records is difficult, I ask that my clients provide a veterinary reference that will verify the immunizations. Different viruses can survive for different lengths of time on a dog's pads and can be easily transferred to the carpet/floor/outside. Same for illnesses hiding in feces.

I always try to justify this to owners by letting them know that it's the best way to make sure that their pet is protected from any un-vaccinated dogs that may have been at the dog park, in my neighborhood, etc. It also protects both of my pets from any potentially fatal illnesses, (like parvo). In addition, I also do not accept pets that are too young to have completed their first two rounds of vaccinations or that spend the majority of their time as "outside pets".

Of course, it's possible that all of this could fail to prevent an illness from occurring. So if you have pets of your own, make your vet aware that you board in your home. They will be able to recommend appropriate preventative measures (like checkups more frequently).

I do require proof of vaccination I feel that it protects my home and pets and just to make sure everyone is healthy. Customers usually don't mind providing it, I've never had an issue. I know other sitters do not ask for it or are not strict with it so I guess it's what you feel comfortable with. Because I take dogs from different families at a time it gives customers a piece of mind that they are leaving their dog with someone who is cautious.