After years of growing orchids without a mite issue, it finally happened. Mites. The Imidicloprid products and Sevin, which is what I alternate between, do not work on mites. I know I can use insecticidal soaps, Sucra Shield, and other contact agents. However I am interested in an effective systemic product to use against these critters. Any suggestions? BTW, the mites are currently causing damage to soft leaved Pleurothallids.