I've never seen a cat go OTJ on a grain-free dry food since I showed up in 2009. Since ECID I'm sure it's possible, kind of like going OTJ on Humulin N is possible, just not likely nor recommended.
CoatCheckGirl said:
I think it is very possible. Case in point:
I have recently made the switch to a grain-free variety of dry food (Blue Wilderness) and for now that is part of Pookie's diet in addition to his wet food. While Pookie is not OTJ, he has gone down from needing 2 units a day to only 1. I would imagine if he was fed the grain-free variety of wet (Wellness, et al), there is a strong possibility he could be OTJ entirely.
Due to budget constraints I cannot feed him Wellness on a regular basis. But rest assured he will be on a Wellness diet once there are some additional monetary resources.
Blue Wilderness is still about 18% carbs (higher in carbs than the Purina DM dry, i believe). Even when dry foods are grain free, they aren't usually low carb. Blue Wilderness and Taste of the Wild, for example, use Potato starch as a binder instead of corn which is still very high in carbs.
One thing that people don't realize with canned food is that when you factor in savings in insulin, test strips, litter (cats eating canned food actually digest most of their food), and current and future vet bills, the dry food is far more expensive to feed than canned.
Have you tried putting your zip code in the Wellness store locator?
http://www.wellnesspetfood.com/store-locator.aspx Often times independently owned pet food stores sell Wellness WAY cheaper than places like Petsmart or Petco, and usually they'll offer discounts if you get 24 cans at a time. Most towns have a locally owned feed store, but you just have to find it. If you get it in the 12 oz cans for the average non-chain feed store price, you'll be paying far less money.
If you can't find cheaper Wellness, it would be much better for you to feed a super-cheap grocery store grain free canned food like Special Kitty Pates from Walmart or Grreat Choice pates from Petsmart only, rather than a mix of dry and premium canned food. 13oz cans of those foods are less than $1, and I know that is way cheaper than the cost of feeding the two foods you are getting now.
I remember one kitty here (
Doombuggy's Cedric), was eating canned Wellness with ridiculously small amount of Blue Wilderness dry food (1/8 of a cup a day) when he showed up here. After a month of being unregulated on insulin, we finally convinced her to ditch the dry, and Cedric went immediately OTJ. Not saying that happens to every cat, but you'd be surprised what a small amount of grain free dry food can do to BG. Bandit can't have even a few pieces of EVO dry at 8% carbs or his BG shoots up 100-200 points, but he can eat canned foods at 8-9% carbs with no effect on BG whatsover.