Ronseal Woodworm Killer

  4.5/5.0 (2 reviews)
2 coats = Standard Protection
Total: enter area
3 coats = Ultimate Protection
Total: enter area

Wood type and application method can vary coverage.

  • A deep penetrating water-based woodworm treatment for interior and exterior use
  • 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 5L
MPN 37662
GTIN 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.

Ensure the wood to be treated with Ronseal Woodworm Killer is clean, dry and free from dust.

  • 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 starting any project and follow the manufacturer's instructions on the tin at all times. Woodworm Killer is not suitable for use on areas used for the preparation and consumption of food. 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 wood worm killer by 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
  4. For eradication of wood boring insects, apply 2 coats; on large timbers apply 3 coats

Ronseal Woodworm Killer can be over-coated with a wood paint, varnish or stain when fully dry.

2 customer reviews
Seems okay by P Carter

Goes on well, time will tell if it woks

Reviewed 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 on: 05/05/16