Honestly, just because your dog has firmer stools on Beneful doesn't mean that it's a healthy food. It also doesn't mean that there aren't other
high quality foods that would be healthy and your dog would have firm stools on. There are so many other foods to choose from and I wouldn't settle for Beneful by any means! I've bolded the worst ingredients below:
Ground yellow corn, chicken by-product meal,
corn gluten meal, soybean hulls*, whole wheat flour, rice flour, chicken,
soy flour, beef tallow preserved with mixed-tocopherols (source of Vitamin E),
sugar, animal digest, tricalcium phosphate, sorbitol, water,
salt,
phosphoric acid, potassium chloride, dicalcium phosphate, sorbic acid (a preservative), L-Lysine monohydrochloride, dried green beans, dried carrots, calcium carbonate, calcium propionate (a preservative), choline chloride, vitamin supplements (E, A, B-12, D-3), zinc sulfate,
added color (Yellow 5, Red 40, Yellow 6, Blue 2), DL-Methionine, ferrous sulfate, glyceryl monostearate, manganese sulfate, niacin, calcium pantothenate, riboflavin supplement, biotin, thiamine mononitrate, copper sulfate, garlic oil, pyridoxine hydrochloride, folic acid,
menadione sodium bisulfite complex (source of Vitamin K activity), calcium iodate, sodium selenite
There are so many things wrong with this food I don't know where to start. Menadione bisulfite is not in better foods because it's been shown to cause health problems:
http://www.dogfoodproject.com/index.php?page=menadione
The food is also based on corn instead of meat. It has low quality fillers (soybean hulls, wheat flour, rice flour), sugar, salt, "animal" fat... really AWFUL stuff for a dog to be eating every day.
If you're interested, take a look at the
ingredients to avoid list from the dog food project. It's very informative and will help you to read an ingredient list and really understand what's in the food.
http://www.dogfoodproject.com/index.php?page=badingredients
The food that I've found to be the best for dogs that have a sensitive system is Timberwolf Organics. It doesn't seem like it would because it has a lot of ingredients, but they really all have a purpose and usually work wonders.
Another good one that I definitely recommend is Eagle Pack Holistic.