the burt’s bee baby shampoo is safe for guinea pigs when you are only bathing every 4-8 months, if used frequently it may cause irritation to their skin. I do not recommend bathing monthly – only when necessary.
top tips for bathing:
1) Avoid getting soap or water on the head, eyes, ears, or nose. Instead use a damp cloth to clean these areas if needed.
2) Use a guinea pig safe shampoo http://gorgeousguineas.com/
3) Make sure you dry off your guinea pig extremely well
DISCLAIMER: This is just my way of giving my pets their bath, there are many different ways to give a guinea pig a bath. I find this way works best for me 🙂