Quick answer
Hand-wash your Kelso tumbler with mild soap and warm water, focusing on the silicone spout valve. Avoid abrasive scrubbers and high heat to protect the leak-proof seal and insulation.
Why gentle cleaning matters
The Kelso tumbler’s silicone sipper spout has a built-in valve that stops water flow when no one is drinking. That clever design is also where crumbs and residue can hide. Scrubbing too hard or using harsh chemicals can break the valve’s seal, causing leaks. The double-wall insulation keeps drinks cold, but extreme heat from dishwashers or boiling water can warp the inner liner over time.
You don’t need special tools—just a soft sponge, a small brush (like a straw cleaner), and warm soapy water. Avoid bleach, abrasive powders, or metal scrub pads.
Step-by-step cleaning guide
- Rinse immediately after use: Empty the tumbler and rinse with warm water. This prevents milk, juice, or sticky drinks from drying inside the spout valve. A quick rinse now saves deep scrubbing later.
- Hand-wash with mild soap and a soft sponge: Use a drop of dish soap and warm water. Gently clean the interior, exterior, and lid with a non-abrasive sponge. For the spout, use a small brush or clean toothbrush to reach the valve area. Avoid steel wool or scouring pads—they scratch the finish and can damage the silicone seal.
- Flush the spout valve: Hold the lid under running water while pressing the spout open. This flushes out trapped particles. Repeat until water runs clear. If water flow seems weak, the valve may be clogged. Soak in warm soapy water for 10 minutes, then rinse again.
- Air-dry completely before storing: Shake off excess water and place the tumbler upside down on a drying rack. Leave the lid off so air circulates inside. Do not reassemble until fully dry. Storing a damp tumbler with the lid on is the fastest way to grow mold in the valve.
Product facts
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Kelso Tumbler, 15 oz. (2 Pack): The Kelso Tumbler features a silicone sipper spout with a built-in valve that stops water from flowing when no one is drinking, making it leak-proof for car or daycare use. Because the valve is the key to the no-leak promise, cleaning it gently without dislodging the silicone ensures the tumbler stays reliable for years.
Kelso Tumbler, 15 oz. (2 Pack)
