New to forum. We have an eight year old female pug and she has had two operations for stones in her bladder. We have had her on Hills w/d for the last six months and distilled water for the past two months. She again showed crystals in her urine last check. Vet now has put her on an anti biotic and water with a little bit of salt in her food and stopped giving her Hills dry dog treats. Any suggestions else what we should be doing?