My oldest female rescued furry child started having UT infections 2 years ago. After several infections coming and going, and several meds, my vet said if these last meds didn't work I'd need to put her on the specialty foods. Being on disability I would not be able to afford the specialty vet brand's, on top of, how would I have her eat it & not eat my other 5's food. I knew that I had noticed a specialty food at Wal-Mart for urinary problems. Right next to the food I already fed them, Purina's Indoor Cats, was Purina's One, for Urinary Tract!! I knew she was not going to just eat the one meant for her. So I had to mix them half & half, then the next week, 3/4 UT & 1/4 indoor & all of the furry kids had to eat the same. I knew that male cats can also get Ut's so it wouldn't hurt the 3 males & 3 females to eat the same. Her infections stopped. Later, I went back to half & half and her infection came back so we are now back to the original mix and she's back to no UT again.