The cabinet under the kitchen sink is valuable storage space—but it shouldn't be used for everything. Declutter your under-sink area by storing only kitchen-related cleaning products and essential organizing tools. Avoid storing harsh chemicals, paper products, small appliances, and pet food under. . Between water supply pipes, the garbage disposal, and water filtration system, there's not much room left for storage. (Yes, even trickier than a corner cabinet. ) It's pretty prime real estate, but it feels weird to store, say, your Dutch oven in there. But there are some categories of objects (and foods) you should never store in that space because they would end up spoiled: here's what they are and why you. . Under the sink storage is a coveted and practical location for many households.