Hi Hersy
I can tell you what I do. I have 3 dogs so I go though a 25 lb bag pretty fast, so I have multiple bags open and switch foods daily. But I had to work my dogs up to that. At first I started gradually switching when I got down to a little less than half a bag and I switched every bag. Then I started speeding up transitions to only about 3 days. Then I started switching cold turkey weekly between whatever I had open and adding in a new food when I ran out of one of them. Now, I switch daily. Right now I have 3 different foods open, but over the winter I had 4. When I use up a bag I start something new in the rotation.
