Q: As I was bringing in one of my houseplants for the winter, I noticed that it has spider mites. I put it in a room by itself and have been spraying it with rubbing alcohol. It seemed to be working, but then the mites came back. What works the best on spider mites?
A: Spider mites are very small and hard to see. It would take 50 of them in a line to make an inch. The nymph stages are even smaller. You may need to use a magnifying glass to see them. Rap a leaf onto a piece of white or black paper, and you might be able to see small specks moving around.
