Organize Under-Sink Storage Like a Pro

Under the kitchen sink is where good organization goes to die. It's dark, damp, hard to reach, and easy to ignore until you're fishing around in the back for that one spray bottle and knocking over three others. But this space doesn't have to be a graveyard of half-empty bottles and mystery rags. The trick is treating it like real estate: zoning it, making it accessible, and being ruthless about what actually belongs there. Done right, you'll find things in seconds, and you'll actually be able to clean out spills instead of just rearranging them.

1. Empty everything and wipe it down. Take out every single item from under the sink and set it on the counter. Wipe the cabinet floor, sides, and doors with a dry cloth first, then hit it with a damp cloth to remove dust and residue. Check for any leaks or water damage around the pipes while you're in there.
2. Sort items into categories and be honest. Group items into categories: cleaners, sponges and brushes, trash bags, plumbing supplies, and anything else. Now throw out dried-up bottles, empty spray bottles, and anything you haven't used in a year. Keep only what you actually reach for weekly or is genuinely essential for that sink's function.
3. Install a pull-out shelf or shelf riser. If you have the vertical space, place a pull-out shelf or shelf riser (also called a cabinet shelf) on the floor to create a second level. These cost fifteen to thirty dollars and instantly double your usable space. Slide it in so the handles face forward and it pulls out easily. If pipes are tight, measure twice before buying—some pull-outs don't fit every under-sink configuration.
4. Group by zone and establish the hierarchy. Create functional zones: daily-use items (sponges, dish soap, hand towel) go front and center where they're easiest to grab. Backup supplies and specialty cleaners go to the sides or back. Plumbing essentials (under-sink filters, shutoff valve tools, drain supplies) get their own small zone away from food-contact items. Never mix cleaning chemicals in the same container or zone—they belong separate.
5. Use tiered organizers and caddies for small items. Place a small tiered shelf or caddy in one corner for sponges, brushes, and small bottles. Use a shallow tray or bin for under-sink filter cartridges, spare washers, or plumbing tape. Caddies with handles make it easy to pull out the whole section if you need to clean behind it or access pipes. Keep like items together so you're not hunting through five different spots.
6. Label and create a backup supply station. Use a small label maker or masking tape to mark zones—'Cleaners,' 'Sponges,' 'Backup Supplies.' Keep one backup bottle of dish soap and one cleaning spray in the reserve zone so you're never scrambling. Everything else should be stored elsewhere (bathroom cabinet, garage, basement pantry). This cabinet isn't your whole supply closet.
7. Install shelf liners and set up drip prevention. Line the bottom and any shelves with washable, waterproof shelf liner or even old towels. Under-sink cabinets accumulate moisture and occasional spills—the liner makes cleanup instant instead of mold-on-wood painful. If you have a pull-out shelf, leave the very bottom of the cabinet bare or use an old cookie sheet to catch drips from above.
8. Do a monthly reset and monitor for leaks. Set a calendar reminder for the first of each month to open the cabinet, wipe it down, and check for any new water marks or leaks around the pipes and trap. This takes five minutes and catches problems before they become cabinet-destroying disasters. Also pull forward any items that have migrated to the back.