We have had Cash our 16 year old ex-male on Vetsulin since October He was up to 12 units a day in January 2017. For months Vetsulin would only hold his blood sugar down for 8 hours max. We ran curves back in December. Due to the suggestion of another user I tried Young Again Zero Mature dry food. Starting on March 1, 2017. We have 5 cats and 4 dogs, have to feed Cash separately or it will be gone in minutes. I'll let the his results speak for themselves. Sure beats the off scale readings (>600) we were having in the late fall. . We think that he got into the dry dog food on 4/3/17 as he came back down with some insulin. Since acquiring his diabetes he quickly lost his abiliity to climb, he has gotten so that he will climb to the sofa. The rest of our cats eat off an Island He has gotten so he can run again but still refuses to climb much. Thankfully so or he would be eating the science diet that the other cats eat.