Constrain® - Insecticide Spray

Constrain® is a high-quality, water-based insecticide spray formulated to safeguard treasured collections and living environments against flying and crawling insects. Widely trusted by museums, archives, and heritage sites throughout the UK, this odourless and non-staining product is perfect for application on sensitive surfaces. Designed for indoor use in both residential and professional settings, Constrain delivers rapid and lasting insect control while preserving the integrity of delicate materials.

Key Features & Benefits:

• ✔ Effective against a wide range of pests - Controls clothes moths, carpet beetles, silverfish, book lice, wood borers, biscuit beetles and more – ideal for integrated pest management across heritage and residential environments.

• ✔ Safe for sensitive surfaces - Tested on materials such as textiles, wood, paper, and metal with no noticeable damage, making it ideal for use in museums and historic houses.

• ✔ Fast-acting and odourless when dry - Provides rapid knockdown and long-lasting protection, without leaving behind strong smells or visible residues.

• ✔ Non-flammable, non-staining micro-emulsion - Water-based formula is suitable for indoor use, even in enclosed or delicate areas, without fire risk or staining.

• ✔ Easy application - Supplied in a convenient 5L refill, and can be applied directly onto insects or surfaces for ongoing protection.

• ✔ HSE Approved (HSE No. 10297) - Approved for use in the UK – reassurance for professional pest controllers and curators alike.

How to Use

• Shake gently and spray lightly from 20-30cm onto affected surfaces or directly at pests.

• Focus on areas such as floor edges, under furniture, wardrobes, drawers (remove items first), rugs, and floorboard gaps.

• Allow surfaces to dry fully before reuse. Avoid vacuuming treated areas too soon, as this removes the protective residue.

• For wood borers, apply directly by spray, brush, or injection into exit holes. Avoid painted or varnished surfaces unless tested first.

• Always test a small inconspicuous area before widespread use.

Why Pest Controllers & Conservation Professionals Choose Constrain^®

Constrain offers a rare combination of powerful insecticidal action with exceptional material safety, a critical balance for heritage preservation and pest control. Its proven efficacy against multiple pest types, coupled with its non-damaging formulation, makes it the go-to product for professionals working in environments where traditional insecticides may be too harsh or unsuitable.

Additional Information

• Active Ingredients: 0.1% cypermethrin (insecticide), 0.1% benzalkonium chloride (surfactant)

• Indoor Use Only: Not for outdoor or animal use

• Available Sizes: 5L refill

• Shelf Life: Use within 2 years of manufacture

• Storage: Store in original container in a frost-free, secure place away from food, drink, and children

• Environmental Notice: Very toxic to aquatic life – dispose of responsibly via licensed waste contractor if needed

FAQs

Can I use Constrain on delicate materials?

Yes, but always patch test first on a small, inconspicuous area to ensure no change in colour or texture.

Is Constrain safe to use around pets and children?

Yes, once the treated surfaces are dry. Keep pets and children out of the treated area during application and until fully dry.

How often should I reapply Constrain?

Frequency depends on traffic and pest pressure. High-use areas may need more frequent applications, while less-used areas may maintain protection longer.