Hi Guinea Girl,Would it be possible for you to find a different vet?, I just cannot beleive that a vet should recommend an enema for a guinea pig, but he should NOT have advised you to do this proceedure yourself.A proceedure like this could be dangerous and should only be carried out by a qualified vet with the assistance of a vet nurse.I have never heard of an enema be given to a piggy and am not convinced it would be a safe proceedure for them because of the structure of the bowel and anus.I certainly would not attempt anything like this.Maybe some of you do know of piggies that have had this proceedure done,if so,please let us know,because it is a very interesting topic. Mary