Yates 200ml Pyrethrum Insect Pest Killer Concentrate Description Kills a wide range of insect pests on vegetables, flowers, ornamentals, fruit trees and indoor plants Low toxic Non-residual Easy-to-use trigger pack – no mixing required, no mess For best results spray under foliage where pests can be hiding. Yates Pyrethrum is a ready to use insecticide ideal for controlling a wide range of pests including caterpillars, aphids, ants, thrips and whitefly on vegetables, flowers, ornamentals, fruit trees and indoor plants. Yates Pyrethrum is based on a natural pyrethrum daisy extract, it is low toxic and works fast.