My two dogs just stayed at one of the sitters. I picked them up yesterday and gave them a bath. I know there were two other dogs and noticed that both of them are constantly scratching their bodies. I checked their skin and there are bug bites and red marks from scratching. (but there are no bugs, just the bites.. my dog is white and shaved so it is easy to inspect) If i take my dogs to a Vet, would the sitter pay for the visit? How would it work? I am a student so the stay itself was expensive enough :/ If not, what would help them to sooth the skin?

Thank you!