It doesn't affect either one of my two dogs. I put their food out and it'll sit there unless I put chicken or beef broth in it or leftovers. I was just home on my lunch break and the food that I put out last night is still in the bowl and my Akita looked at me like are you going to feed us. I normally don't until I get home so that I don't come home to unwanted messes in my house because on Sunday I work long shifts. I buy mostly from the super markets and a few weeks ago my daugther bought an expensive bag from the pet store where she works and it I don't mix it they'll go hungry; especially the Akita. After they eat at night they both go to sleep until I go upstairs and they follow me up and go right back to sleep. If this is happening to ALL foods my dogs must be immune to it or something; or just plain spoiled.