Dethlac Insecticidal Lacquer 250ml


Dethlac Insecticidal Lacquer Spray is for use against ants, cockroaches and woodlice both indoors and outdoors. It is celebrating its 57th year, having sold millions of cans to its loyal customers throughout the UK.

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  • Trusted for over 50 years
  • Effective for months
  • Kills after contact with treated surface
  • HSE Approved for Amateur and Professional Use
  • Contains deltamethrin

Dethlac is a unique lacquer that kills woodlice, ants, cockroaches and other crawling insects.
Once sprayed, Dethlac dries to a hard clear film, which remains fully effective for months, even when it rains or if the surface is washed with detergents.
Dethlac can be used indoors and outdoors and may be applied on any firm non-absorbent surface, ie doors, window frames (not upvc), skirting boards, shelves, concrete & patios etc.

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How To Use

  1. Dethlac is a surface spray and as such should only be applied to non-porous surfaces.
  2. To create a barrier spray a band 7 cm – 10 cm wide, spraying in 5 second bursts at a distance of 20 cm from the surface.
  3. Spray into any cracks and crevices where there is insect activity.
  4. Dethlac dies to a hard clear film which kills the insects within a few hours of coming in contact with the treated area.
  5. Can be used indoors or outside.
  6. During application keep children and pets away from the surface until product is dry.
  7. Always read the manufacturer instructions before use.

Safety Data

Dethlac Insecticidal Lacquer has been approved under The Control of Pesticides Regulations – HSE 9708

Click here for Safety Data Sheet


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Area Carrier Cost
UK Mainland DPD 2 Working Day Service £6.00 (FREE on orders over £75.00)
Scottish Highlands DPD 2 Day Service £17.50
Scottish Islands, Isle of Man, Scilly and Channel DPD 2 Day Service £21.00
Isle of Wight DPD 2 Day Service £15.00
Northern Ireland DPD 2 Day Service £12.50

Orders placed on a Friday after 4pm or over the weekend will be dispatched the following Monday, unless that Monday is a bank holiday.

We do not offer Saturday delivery.

Collection is possible by arrangement.

View our full shipping policy here