Do not just put a whole tube of revolution on a guinea pig. You need to know the concentration of the Revolution you purchased as it comes in several different strengths.
Depending on the species and weight range you purchased, 1 tube could be a massive overdose for a guinea pig./QUOTE]
Absolutely valid point, Revolution do make a range of products that would be inappropriate to be used this way. However the Revolution product I've recommended is appropriate to be used this way. Revolution (pink) for puppies and kittens is suitable to be used in full one tube per animal on guinea pigs.