This application is essential if you are having spidermite problems. When using insecticidal soaps, spray the entire plant thoroughly and repeat applications frequently. You may have to spray every few days at first until the infestation is under control. Apply in the morning, evening or on overcast days as not to burn tender new leaves if sprayed in full sun. Read carefully all label instructions.
Soaps can burn some skin sensitive people or hurt eyes.
Spray only the parts where insects are a real problem. If possible use rain or soft water as soaps adheres better in water without high minerals content. Some rose growers submerge their bareroots in the bleach solution or peroxide before planting in spring or fall. Only dip them do not leave them in it for any length of time. They are also used to monitor and alert the grower when insects appear on the scene.