Preventing Mold

Mold or mildew odors can happen when water is left inside a Stream Machine launcher between uses, especially in warm weather. The best prevention is simple: rinse, drain, dry, and store the launcher properly. The steps below help keep the tube clean and your launcher smelling fresh all season.

Why Mold or Mildew Can Develop

Stream Machine launchers hold water inside the main tube. If water remains trapped after play, moisture and organic residue can create a musty smell over time. This is more likely after lake use, dirty bucket water, or storing the launcher in a warm, enclosed area.

Common Causes

• Storing the launcher with water still inside the tube
• Using natural water sources with algae or sediment
• Leaving the launcher in a hot car, shed, or closed storage bin
• Not rinsing after pool chemicals or salt water

Daily After-Use Routine (Best Prevention)

Follow this quick routine after each use to reduce odor and prevent buildup.

• Refill once with clean water and shoot a few streams to flush the inside.
• Extend the handle fully to drain as much water as possible.
• Shake out remaining droplets with the nozzle pointed downward.
• Store in a shaded, ventilated area until fully dry.

Drying Tip

For faster drying, store the launcher with the handle fully extended and the nozzle pointed down so water can drip out and air can circulate inside the tube.

Best Cleaning Method (When There Is a Musty Smell)

If you already notice odor, clean the launcher and flush the tube. Start with the gentlest option first.

Option 1: Warm Water Flush

• Fill a bucket with warm (not hot) clean water.
• Dip the nozzle and cycle the handle 10–15 times.
• Shoot several full streams to flush the tube.
• Drain fully and air-dry with the handle extended.

Option 2: Diluted Vinegar Rinse (Odor Control)

Vinegar is commonly used for odor reduction. Use a mild dilution and rinse thoroughly afterward.

• Mix a solution of 1 part white vinegar to 3 parts clean water in a bucket.
• Fill the tube using the dip-and-pull method and cycle a few times.
• Let it sit briefly (do not store long-term with solution inside).
• Flush thoroughly with clean water (10+ cycles) until the vinegar smell is gone.
• Drain fully and air-dry.

What Not to Use

• Do not use oils, lubricants, or scented cleaners inside the tube.
• Avoid strong chemicals that could damage seals or plastics.
• If you choose to use any disinfectant, always dilute and rinse extremely well before use.

Storage Tips to Prevent Mold

• Never store the launcher with water inside.
• Keep out of direct sun when not in use (sun can age plastics over time).
• Avoid sealed bags or airtight bins while the inside is still damp.
• Store in a cool, dry place with ventilation.

Off-Season Storage

• Flush with clean water and drain completely.
• Air-dry for at least 24 hours in a ventilated area.
• Store with the handle extended if possible to allow airflow.

Quick Answers

Can I leave it filled between uses?

No. Leaving water inside the tube is the fastest way to create odor or buildup. Drain and dry after each use for best results.

Is pool water okay?

Yes, but rinsing with clean water after frequent pool use helps reduce chemical residue and keeps the tube fresher over time.

A simple rinse, full drain, and proper drying routine will prevent most mold or mildew issues. If odor returns repeatedly, switch to cleaner refill sources and make sure the launcher is fully dry before storage.