In Dec. 2004, Health Canada announced a decision to ban repellents with higher than 30% concentrations of DEET from stores.
As well, a study in the New England Journal of Medicine was published indicating that DEET repellents give the best protection from mosquitoes.
Avoiding insect bites can be difficult, but before you use an insect repellent, try these methods:
- Wear light-coloured clothing.
- Don't use scented soaps, hair spray, perfume, etc. when outdoors.
- Burn citronella candles.
- Stay away from stagnant water at dusk and dawn.
If these fundamental precautionary measures are not enough, repellents are the next step.
DEET (N,N-diethyl-m-toluamide) is the most effective and widely used chemical in insect repellents. It is a toxin, so you should choose the lowest DEET concentration that you need.
In most situations, less than 30% DEET will adequately protect an adult.