I would like to thank everyone for their imput.

I don't switch my cats food all the time the only reason why I started switching was to help one of my cats lose weight hopefully but my one all white cat couldn't handle the type of food and that's why I had to switch them again and I probably should of just switched them back to the indoor formula but I took my vets advice.

I just started switching them back over to purina indoor formula so we'll see what happens.