As for cranberry, oregon grape etc, those are only useful for treating infections. Cranberry, for example, helps if it's an e-coli infection, but they won't help with bladder stones/crystals. If Marty has struvite, it can be food related (urine is too alkaline), but struvites are also caused by bladder infections, whereas oxylate stones can be hereditary and/or diet related.
"Obey my dog!" - Mugatu
"Who can believe that there is no soul behind those luminous eyes!" ~ Theophile Gautier
"Dogs are not our whole life, but they make our lives whole" - Ok... whoever said this has never had a sick or special needs baby. They ARE our whole life!
R.I.P. my sweet, handsome Thorin. You are missed dearly Dec. 25, 1999 - Mar. 4, 2012