This service has been absolutely critical and sorting out all the intolerances. My dog had to her food. She was suffering terribly from ear infections, and they never went away. After testing her and trying to sort out the results, I was able to eliminate all of the things that were worst for her and most of the foods that were in the yellow And she’s already doing better and it hasn’t even been six weeks. I highly recommend this if your dog is having problems with food and her environment.