The gas is getting out of hand

So I am switching food. I still will do raw, but I want to keep another food on hand. I have a great pet health food store here and I picked up some Earthborn Holistic grain free food. I talked to the owner and asked about some other brands. He said that many are frozen for transport and brands like ORajen arent. Is freezing the food bad? In another post someone said that the food they use has peas instead of Sweet potatoes. Most I have found have sweet potatoes. Bad? This brand has a lot of probiotics and good stuff.
He also told me about Total Zime for gas. When I got sadie I was using regular dog food, I dont remember having any gas, then I switched to raw, She only had gas when I fed pork and it didnt seem to be that bad, some in the early evening but that was it. Chicken never bothered her. Then I added Honest Kitchen and thats when the gas started. Last week I ran out of HK and just had them on meat and the gas was still bad, myhouse is smelly now.
Any advice, ideas? I dont want to make soup with a gassy dog.

Lisa, Thalie CGC & Sadie, Cookie the Basset, CT

