Susan , our vet say 4 x a day is fairly normal. We have found the crystal problem is either do to diet or genetics . my pups problem is either /one we have been changing diets every 10 days the best diet got rid of UTI , crystals and dropped her ph to 5.5 (to acidic) so we are working on modifying protein % in the kibbles plus 1/8 of slice of Hills cd . your moms 11year old is probably do to diet also I would chk with the vet for a plan. Genetic problem would have shown up much earlier in that dogs life
