furbum, my Ophelia has crystals in her urine. I'll tell you what I've done.
1)Keep a Feliway diffuser plugged in 24/7...even if she is calm. It helps reduce stress.
2)Bought a Drinkwell. She still prefers to drink from a large bowl, but it's there if she wants it.
3)Feed wet food 2x a day. Right now, I'm feeding Iams new Chicken Entree & Pro Plan Urinary Tract Health Formula(crappy ingredients, but she loves it). I hope to order some Merrick Granny's Pot Pie & try Nutro Natural Choice Salmo & Shrimp Chowder to see if she likes them. MAX Cat Hairball formula wet, too.
4)Found a dry food I was comfortable with feeding...I am feeding Solid Gold Katz-N-Flocken.
I don't like feeding the Pro Plan that much, but I feel that feeding a high quality dry & lower quality wet is better than no wet at all. Ophelia was no longer interested in the Science Diet c/d...she barely ate 1/4 of a cup a day...and was incessantly begging for food even though she had some in her bowl. I offered her Solid Gold & she loves it.
I saw a Solid Gold booklet that had this article.(page 9 for Katz-N-Flocken & page 20 for Urinary Tract Disorders info)http://18.104.22.168/search?q=cache:...s&ct=clnk&cd=3
While they are promoting their food, my vet agreed that it would be a good food to feed. Albeit, she also admitted she knows very little about food.
I have looked into several different foods & asked sharky for tons of help. I got a couple of food reccomendations, but mostly I look for foods that promote "URINARY TRACT HEALTH"...like Pro Plan. (The Pro Plan Urinary tact health can is tiny, tiny little chunks. Very popular at my house)