Why isn't Foaming Spray Bottle working?Updated 16 days ago
TL;DR: If the Foaming Spray Bottle isn’t working, check the refill first. The most common issue is using a product that isn’t designed to foam. Rinse the head in warm water, pump clean water through, and try again.
1. Check the refill
Make sure you are using a foamer-compatible product.
2. Rinse the head
Run warm water through the foamer head to clear residue.
3. Flush and test
Pump clean water through the nozzle and test again.
Why isn't Foaming Spray Bottle working?
Most common cause
Wrong refill in the bottle.
Quick fix
Warm-water rinse and a clean-water flush.
Expected result
The bottle should return to a steady foam.
Which refills should I use?
Use
Bathroom & Shower Cleaner, Kitchen Grease & Oil Cleaner, Stain Remover.
Do not use
Universal Cleaner, Dishwashing Liquid, Sensitive Laundry Liquid.
Why
Those formulas won’t aerate the same way.
How do I clear the nozzle?
Remove the head
Take the head off and rinse it under warm water.
Pump clean water
Push clean water through the nozzle path.
Retry
Reassemble and test again with the right refill.
What if it still doesn’t work?
Recheck the product
Make sure the bottle contains a foamer-compatible refill.
Flush again
A second warm-water flush can clear leftover residue.
Contact support
If it still won’t work, ask Koh support for help.
Browse all Foaming Spray Bottle articles
Last reviewed: July 2026 · Koh UK