How to control orchid pollen lice

The whitefly is small and has white or other waxy powdery substances all over the body, often harming orchids with herbaceous leaves. Whiteflies often gather on the back of leaves and absorb juice, resulting in poor growth of orchid plants and often lead to disease infection. Whitefly propagates rapidly and should be sprayed in time. It is best to kill with 2.5% deltamethrin (EC) 2500-3000 times.