PermaNet® Curtains are long-lasting, insecticide-treated curtains. Made of 100% polyester, PermaNet® Curtains are impregnated according to the specifications, customer quality control systems and requirements of international health and aid organisations.

PermaNet® Curtains are warp-knitted from strong, 100% polyester yarns. Our excellent production techniques provide PermaNet® Curtains with uniformly woven netting material. To set the net and prevent shrinkage, the fabric is placed on a stenter and exposed to high heat. The next step, Deltamethrin-impregnation, uses a continuous industrial process that secures exact concentration and equal distribution of the insecticide, guaranteeing the long-lasting effects of PermaNet® Curtains. Lastly, the netting material is cut and sewn into various sizes that represent ready-to-use PermaNet® Curtains.

Every process is subject to extensive inline controls, which ensure that every finished PermaNet® Curtains meet company specifications and WHO recommendations.

Although the Culex mosquito generally has a higher resistance to pyrethroids, PermaNet® Curtains retain a high repellence level. Due to the unique distribution and release of Deltamethrin in PermaNet® Curtains, insects rest longer on them, assuring eventual mortality.

As the result of a specialized dirt-repellent treatment, PermaNet® Curtains do not attract as much dirt and dust as other nets. PermaNet® Curtains are especially easy to clean and require no manual friction, even in cold water. Consequently, the occurrence of abrasion to the net is diminished and the longevity of the net is prolonged.nets.

At the moment, Deltamethrin is the only insecticide used in PermaNet® Curtains. We maintain our commitment to testing other insecticides to look for as yet-undiscovered benefits in specific areas.

The target dosage is 55 mg/m².

Deltamethrin, a cyano-pyrethroid, has been used to treat PermaNet® Curtains. This is because:

• Deltamethrin has good adhesion abilities to polyester
• Deltamethrin has a good toxicology profile which makes it practically harmless to humans
• Deltamethrin has undergone the WHO Pesticide Evaluation Scheme (WHOPES)

Yes, PermaNet® Curtains can be re-impregnated after having been washed to exhaustion.

Pyrethroid is a neurological insecticide that is absorbed by the legs of the mosquito. When the poison is detected, mosquitoes often dispose of the affected legs. With only three or fewer legs, mosquitoes lose their balance and can no longer fly, land or bite.

KD or Knockdown refers to the state of intoxication and partial paralysis, which usually occurs before death in insects caused by exposure to insecticides such as pyrethroids and DDT. The degree of knockdown and recovery in mosquitoes depends on the dose of insecticide but in real life conditions (in the field) knocked-down mosquitoes do not survive because they are eaten by ants or desiccate before they can regain consciousness.

Total Mortality (TM) refers to dead mosquitoes (i.e. mosquitoes that look dead and do not move any more).

Functional Mortality (FM) refers to mosquitoes that are disabled and would not survive in the wild; usually this includes mosquitoes that have lost at least three legs or one wing.