Ronseal Woodworm Killer

  4.3/5.0   4 reviews

You'll need enter area above for 2 coats (Standard Protection)
You'll need enter area above for 3 coats (Ultimate Protection)

Wood type and application can vary coverage

  • A deep penetrating, water-based woodworm treatment for interior and exterior use
  • Requires a top coat if used outside
  • Kills woodworm, wood boring insects, their larvae and eggs
  • Offers years of lasting protection against re-infestation
  • Dries to a clear finish
  • Low odour
  • Low V.O.C content
Brand Ronseal
No. of coats 3
Coverage Up to 10 per litre
Drying time hrs
Size 1L, 5L
MPN 38245, 37662
GTIN 5010214882458, 5010214876624

Ronseal Woodworm Killer contains permethrin, an effective woodworm killer, which will prevent the infestation and spread of woodworm, thus avoiding the associated damage.

Insect attack can be recognised by small round holes on the surface of the timber and the gritty bore-dust that is left behind. These woodworm holes are most likely to be found near joints or on the undersides or backs of furniture. Whilst holes indicate that wood beetles have emerged, it is likely that woodworm larvae remain in the wood.

Please Note: This product is not suitable for use on areas used for the preparation and consumption of food.

Ensure the wood to be treated is clean, dry and free from dust, dirt and any other surface contaminants.

  • Any previous finishes such as paint, stain and varnish must be completely removed
  • Special precautions should be taken when removing pre-1960's paint surfaces over wood as they may contain harmful lead

Always do a small test area before beginning any project to assess performance and follow the manufacturer's instructions on the tin at all times.

Do not apply in temperatures below 10℃ or in conditions of high humidity or if rain is likely before the product has fully dried.

  1. Apply Woodworm Killer with a natural bristle brush, covering all faces, ends and joints paying particular attention to the end grain, corners and crevices
  2. Allow 2-3 hours between coats
  3. For prevention of attack by wood boring beetles, apply 2 coats; on structural timbers apply 3 coats
  4. For eradication of wood boring insects, apply 2 coats; on large timbers apply 3 coats

Once fully dry, Ronseal Woodworm Killer can be over-coated with a suitable wood paints, stain or oil.

4 customer reviews
Easy to apply by C Peace

Easy to apply. Hard to tell if has worked or not yet

Reviewed 1L on: 11/04/18
Very quick and easy by Alan Brown

Easy to use, will have to wait and see for results.

Reviewed 5L on: 23/03/18
Seems okay by P Carter

Goes on well, time will tell if it woks

Reviewed 5L on: 04/02/17
I haven't had wood worm yet by Sparky

Easy to apply with a garden pump sprayer for great coverage. It doesn't take forever to dry either, so you can get on with a finishing product. I use it as a preventative measure, so it's hard to rate it really as I'll never know if I would've got woodworm or not, but for the price it's a a no-brainer for piece of mind.

Reviewed 5L on: 05/05/16