schefflera has 'bugs' ... help!
I have an old schefflera that has had small brown scales on the leaves for years & I can't get rid of them!! I have tried pyrethrin spray & wiping each leaf top & bottom with 70% alcohol on cotton balls to wipe those scales away as a previous posting has suggested but nothing seems to work!! I scrape off what looks like all of the scales & spray with alcohol only to see more in a day or two. Is there something else I could do to get rid of these things ... topical or in the soil? Am afraid these scales will get to other of my house plants. Are the plants infected when they are purchased?