Church Snacks, when should they stop?

My husband and I are at odds every Sunday...do we bring bags full of cereal for the kids or leave them at home? Hubby says it's ridiculous to still bring them, they make a mess and are distracting and noisy; I say bring them since he ends up passing the sacrament every Sunday and then during the talks the kids climb and whine on me, so I rarely listen and thing feeling the spirit means when I don't feel REALLY angry during the meeting. If I give them a bag of snacks, life is good for all of us. We always to get a vacuum and clean up our row and others anyway. However, I know there is a point when they should stop. When is that point? Is it bad that only on fast Sunday can I help myself from grabbing a few too?