Barrettine Premier Woodworm Killer

Barrettine Premier Woodworm Killer contains permethrin, and is a fast and effective way of killing woodworm and their larvae. It is ideal for use on ceiling and floor joists, floorboards, wooden beams, furniture, doors and more.

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 holes are most likely to be found near joints or on the undersides or backs of furniture. Whilst holes indicate that beetles have emerged, it is likely that larvae remain in the wood.

Barrettine Woodworm Killer kills all common insects, including Common Furniture Beetle, House Longhorn Beetle, Powder Post Beetle and wood boring Weevils, and larvae and eggs when in direct contact.

Please Note: This product has replaced the previous solvent-based version. It is not suitable for use on areas used for the preparation and consumption of food.

• Also available as a water-based trigger-spray bottle - Barrettine Premier Woodworm Killer Spray

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

• Any previous finishes, such as paint, stain and varnish, must be completely removed by either sanding back to bare wood or using Barrettine varnish and paint strippers or an alternative paint and varnish remover
• Special precautions should be taken when removing pre-1960's paint surfaces over wood as they may contain harmful lead

Always do a test area before starting any project, to test product suitability and final finish. Follow the manufacturer's instructions on the tin at all times. Do not apply in conditions of high humidity or if rain is likely before the product has fully dried.

1. Shake the tin well before and periodically during use
2. Apply to clean, dry wood to maximise penetrating power and therefore effectiveness
3. Remove any bore dust (frass) / sawdust by vacuuming (otherwise this will preferentially absorb the product)
4. Remove all surface coatings such as paint, varnish etc wherever possible as these coatings inhibit the effective penetration of the product. Note; Special Care to be taken when removing old Lead paints
5. Badly attacked wood should be cut away and burnt, safely making any necessary structural repairs prior to treatment
6. Apply by brush or by using a low pressure, coarse (non-atomising) spray
7. Ensure all surfaces are thoroughly treated and are wet after application (but not dripping) especially any end grain, joints, exit holes of the woodworm or crevices in the wood
8. It is recommended 2 applications are made to ensure the correct coverage is achieved. Insufficient application may not kill existing infestations nor prevent future attacks
9. Allow at least one hour between applications to enable the first treatment to fully absorb into the wood

Touch dry in approximately 6 hours under normal conditions.

Can I apply this over varnish or wax?

This product can only be applied to bare wood. Any finish should be completely removed by sanding or chemical stripper. The product needs to penetrate into the grain to do its job.

What insects will Barrettine Woodworm Killer kill?

The active ingredient Permethrin is non-discriminatory chemical and will be effective against all insects their larvae and eggs providing direct contact is made.

Can Barrettine Woodworm Killer be used inside or outside the house?

The product is primarily intended for interior use as this is where woodworms are typically found, sometimes they may be located in an exterior environment where the product is equally effective. This should be applied to bare wood and given a finishing coat afterwards to help the treatment along. Avoid application during or where rain is expected.

Is this the solvent-based formula?

Barrettine changed the formula to a new water-based version. Unfortaunmetly, the old solvent-based product has been discontinued and is no longer available.