How to Clean and Maintain Your Nalgene Sustain Bottle

Quick answer

Wash your Nalgene Sustain Bottle daily with warm soapy water, use a bottle brush for deep cleaning, and always air dry upside down to prevent mold.

Step-by-step cleaning guide

1. 1. Rinse immediately after use: Empty the bottle and rinse with hot water to remove loose residue. This prevents stains and odors from setting in. Do not leave liquid sitting in the bottle for hours—rinse right away.
2. 2. Wash with warm soapy water: Fill the bottle with warm water and a few drops of mild dish soap. Use a dedicated bottle brush to scrub the interior, bottom, and threads of the cap. Pay extra attention to the cap threads—they are a common spot for buildup.
3. 3. Rinse thoroughly: Rinse all soap residue with clean warm water. Soap left inside can affect taste and irritate sensitive stomachs. Taste test: fill with plain water and sip—if you taste soap, rinse again.
4. 4. Air dry upside down: Place the bottle and cap upside down on a clean dish rack. Ensure air can circulate inside. Do not reassemble while wet. Moisture trapped in a sealed bottle promotes mold growth—dry completely before storing.
5. 5. Deep clean weekly: Once a week, use a mixture of white vinegar and water (1:3 ratio) or a mild bleach solution (1 teaspoon per quart) to sanitize. Let it sit for 5 minutes, then rinse thoroughly. Avoid using baking soda—it can be abrasive and leave a gritty residue.

Product facts

• The Nalgene Sustain® Bottle: The Nalgene Sustain Bottle features a wide mouth closure and a 32 fl oz fill, designed for reuse and outdoor use. The wide mouth makes it easy to clean with a standard bottle brush, but the cap and threads need extra attention to prevent mold.