How to Clean a Gum Shield (and Why It Smells After a Week)
Educational information only – read the full notice
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Rinse it under cold water, brush it with a soft toothbrush and a drop of mild soap, rinse again, dry it fully, then put it in a ventilated case. That's the whole routine, and it takes a minute. Here's why it matters and what to do when it's already gone bad.
Why gum shields smell
A gum shield spends an hour in a warm, wet mouth and then, usually, goes straight into a zipped bag pocket while it's still wet. That's a sealed, warm, damp box with saliva and bits of whatever was eaten before training. Bacteria and yeast grow in it, which is the smell, and a shield that smells is one your child will take out and leave in the bag. The point of cleaning it isn't tidiness. It's that a clean shield gets worn.
After every session
Rinse under cold running water as soon as it comes out of the mouth. Cold, never hot. Hot water softens and warps it, and a warped shield doesn't fit.
Brush it with a soft toothbrush and a small amount of mild soap or a little toothpaste. Get into the grooves where the teeth sit. Keep a separate cheap toothbrush in the kit bag for this.
Rinse again to get the soap off.
Dry it properly. Shake it, pat it with a clean towel, and leave it out in the air until it's dry. Wet shield, sealed case, smell.
Case with holes in it. A ventilated case lets the last of the moisture out. Wash the case too, once a week, because it grows the same things the shield does.
Once a week
A deeper clean: soak it for the time on the packet in a denture cleaning tablet dissolved in cold water, or in a half-and-half mix of alcohol-free mouthwash and water, then rinse and dry. Don't leave it soaking for hours, and don't use bleach, boiling water or anything abrasive. Some parents run it through a quick cold soak in diluted mild soap; that's fine too.
What not to do
No hot water, no dishwasher, no microwave, no sterilising in a kettle. All of those warp it.
No mouthwash with alcohol as a long soak; it dries the material and makes it brittle.
No sharing. Ever. A borrowed gum shield is someone else's mouth in your child's.
No zipped pocket while wet.
When cleaning isn't enough
If it still smells after a proper wash and a weekly soak, it's finished. The same goes for tooth marks through the material, cracks, rough edges, or a fit that's gone loose because the teeth have moved. A gum shield is a few pounds; replace it. Most junior players go through one a season, and the sign to change it is usually the smell, not the damage. If your child's due a new one, our guide to gum shields for kids' rugby covers which type, sizing, moulding, and braces.
General guidance, not dental advice. If your child has braces or a custom shield, follow your dentist's or orthodontist's cleaning instructions.
The rugby bag, sorted
First aid kits built for grass and astro burns, a rinse-free cleansing spray for after training, handmade soap for the shower, and the spray for scrum caps and shared kit. For players, parents and clubs, with the season written up in order.
