Guinea pigs don't need to be bathed regularly, says Dr. Lynne D. Cabaniss, a veterinarian specializing in small and exotic animals at Collins Animal Hospital in Washington, D.C. Twice a year should do it, she says. Bathing too often may dry out your pig's coat, irritate her skin and stress her out.
Use a gentle, hypoallergenic shampoo made for animals, and lukewarm water to protect your guinea pig's sensitive skin. Dry her fur gently with a towel.
Concerned about odors between baths? Clean your guinea pig's cage frequently (every day or every other day) so she'll always smell fresh and clean.