To organize under the kitchen sink, start by emptying everything out, discarding expired or duplicate products, grouping remaining items by category, and then installing a combination of stackable shelves, pull-out bins, and door-mounted organizers that work around the pipes. The under-sink cabinet is the most neglected storage space in most kitchens because its awkward shape and exposed plumbing make it harder to organize than standard cabinets—but with the right approach, it can hold cleaning supplies, trash bags, dishwasher pods, and extra sponges in an organized, accessible system.
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Step 1: Empty Everything and Assess
Pull every item out from under the sink and lay it on the counter or floor. This step is essential because most people have no idea what’s actually down there. Common discoveries include duplicate spray bottles, expired cleaning products, dried-out sponges, and plastic bags you forgot existed. While the cabinet is empty, check for leaks or moisture damage—water stains on the cabinet floor are a sign of a slow drip that needs fixing before you organize anything.
Pro tip: Line the bottom of the cabinet with a waterproof shelf liner before putting anything back. This protects the wood from future drips and makes cleanup easier.
Step 2: Sort and Purge
Divide your items into four groups: daily cleaning supplies (dish soap, counter spray, sponges), weekly supplies (floor cleaner, glass cleaner, heavy-duty degreaser), trash and bag supplies (garbage bags, recycling bags), and miscellaneous (extra sponges, gloves, specialty cleaners). Discard anything expired, nearly empty, or that you haven’t used in 6+ months. Most households can eliminate 25–35% of their under-sink items in this step.
What to avoid: Don’t just shove everything back in after a quick sort. The purge step is what makes the organization sustainable long-term.
Step 3: Work Around the Pipes
The biggest challenge under the sink is the plumbing. P-traps, water supply lines, garbage disposal units, and water filtration systems all eat into usable space. The key is to measure the usable areas on either side of and in front of the pipes, then choose organizers that fit those specific dimensions. Stackable half-shelves that go around pipes are the most effective solution—they create two levels of storage on either side of the plumbing.
For smaller items like sponges, dishwasher pods, and gloves, use small bins or caddies that fit in the narrow spaces between pipes. Tension rods installed horizontally across the cabinet create hanging space for spray bottles—the bottle triggers hook over the rod, keeping them visible and accessible while the cabinet floor stays clear.
Step 4: Install Door-Mounted Storage
The inside of the cabinet doors is prime real estate that most people ignore completely. Adhesive-mounted hooks hold scrub brushes and gloves. Small wire baskets or pocket organizers hold sponges, steel wool, and small cleaning tools. A mounted paper towel holder keeps a roll accessible without using floor space. Door-mounted storage works especially well for items you grab daily because opening the cabinet puts them right at eye level.
Step 5: Organize by Frequency
Place daily items at the front of the cabinet or on the door—dish soap, counter spray, and sponges should be grabbable without reaching or moving anything. Weekly items go behind daily items or on the upper shelf. Backup supplies and rarely used specialty cleaners go to the back or on the highest shelf. This frequency-based layout means 90% of your under-sink trips require zero rearranging.
This same frequency-based approach works throughout the kitchen. For drawer organization using this principle, see our guide on how to organize kitchen drawers.
Step 6: Add Bag and Wrap Overflow Storage
Many households store overflow trash bags, recycling bags, and extra ziplock bag boxes under the sink. While daily-use ziplock bags belong in a dedicated bag organizer on the counter or wall (the Night Tree Bamboo Bag Organizer is ideal for this), backup supplies can live under the sink in a labeled bin. Keep one box of each trash bag size in a stackable bin, and when the upstairs bag organizer runs low, refill from the under-sink reserves.
Under-Sink Organization Checklist
- Waterproof shelf liner on cabinet floor
- Stackable half-shelves around pipes
- Tension rod for spray bottles
- Door-mounted hooks and baskets
- Small bins for loose items (sponges, pods, gloves)
- Labeled bin for backup bag supplies
- Paper towel holder (door-mounted or standing)
Products That Help
- Bag organizer for daily ziplock bags: Night Tree Bamboo Bag Organizer on the counter frees under-sink space. Buy on Amazon
- Drawer organizer for nearby utensil drawer: Night Tree Bamboo Expandable Drawer Organizer
- Drawer dividers for deep drawers: Night Tree Bamboo Drawer Dividers
For a complete kitchen organization strategy, browse our kitchen drawer organization ideas and our article on sustainable kitchen organization.
Common Mistakes
- Ignoring leaks before organizing — A slow drip will destroy any organizer and create mold. Fix plumbing issues first.
- Using organizers that don’t fit around pipes — Measure your specific pipe configuration before buying anything. Universal solutions rarely fit perfectly.
- Stacking items without shelves — Stacking bottles directly on top of each other creates an avalanche every time you grab the bottom one. Use actual shelves.
- Keeping too many products — You probably need 5–7 cleaning products, not the 15–20 that accumulate over time. Consolidate where possible.
Frequently Asked Questions
What is the best way to organize under the kitchen sink?
Empty everything, purge unused items, install stackable shelves around pipes, add door-mounted storage for daily items, and organize by frequency of use. Move daily-use ziplock bags out of the cabinet entirely and into a Night Tree countertop bag organizer.
How do I organize around sink pipes?
Measure the usable space on either side of the pipes and use stackable half-shelves that fit around them. Tension rods across the cabinet hold spray bottles above the pipes. Small bins fill narrow gaps between pipe sections.
What should I keep under the kitchen sink?
Cleaning supplies (sprays, sponges, dish soap, dishwasher pods), trash bags, rubber gloves, and backup supplies. Move ziplock bags and food wraps to dedicated countertop organizers. The Night Tree Bamboo Bag Organizer is designed specifically for this purpose.
How do I prevent mold under the kitchen sink?
Fix any leaks immediately, use a waterproof shelf liner, keep the area ventilated (leave the cabinet door slightly open for 10 minutes after running hot water), and check for moisture monthly.
How often should I reorganize under the sink?
Do a quick 10-minute purge every 3 months. Discard expired products, consolidate near-empty bottles, and remove items that migrated from their designated spots. A well-organized system needs only minor maintenance.