I doubt it will cost much to get a nail trimming at the vet's. If you want to try it on your own, it is best if you have someone help to hold the guinea pig. I use a mini straight nail clipper, and not cuticle scissors. I hold my guinea pigs on my lap and gently lift their leg out and cut the white part of the nail partially. Remember to never touch the pink part, because that is where blood is. hope this helps