Like any pest, a spider infestation can be problematic.These eight-legged terrors are generally harmless but you may consider them undesirable.
The new Richgro range of Ant, Spider & Cockroach Killers have Permethrin as an active. It is a synthetic, man-made insecticide, whose chemical structure is based on natural pyrethrum. The so-called pyrethroid insecticides were developed to match or exceed the effectiveness of natural pyrethrum but be more stable in sunlight. Permethrin is a popular insecticide and widely used in a number of ways to control insects.