It smells gross and eats up my personal smell, so it really isn't worth it going back to check it out. We haven't figured this out. I bark to tell them there is something significant outside, but they don't always agree. Then my job is done, usually. At the kennel you probably only ate dog food.
Houses have all kinds of other foods.
You really should stick to dog food, but some families will give in and give you people treats. Try to be sensible. Your people had best do some research into good and bad foods for dogs. Chocolate is deadly. Don't eat any.