Info may needed:
She uses fleece bedding
I don't use smelly things to clean it with and keep everything clean and not smelly.
It sounds like this vet may have not properly diagnosed your guinea pig. If they are an exotics vet, you could call and complain that they are still exhibiting the signs of a uri. Right now it is important that you weigh your guinea pigs daily to ensure they are eating enough.
- For the Love of Pigs