UPDATE 7-15-13:  I was wrong.  It only works on fuchsia mites for a brief time, and only on smaller fuchsias.  If you have large fuchsias (like mine, 7 to 8 feet tall)it is completely ineffectual.  I have also been disappointed to find roses with black spot and powery mildew - and caterpillers eating the few good leaves and new buds.  My longer term experience with this product is that it does not work as well as I initially thought.

This stuff is great.  It is the only thing I have found to kill fuchsia mites.  I have 3 different kinds of fuchsias--all of which have problems with the mites to some extent, and this has worked on all of them. Besides fuchsias, I've used it on lots of different plants.  I have an Angel's Trumpet that kept dropping its leaves, and having only a few flowers.  The leaves had something powdery and black under them.  I used this stuff, the leaves stopped dropping, the black disappeared, and the plant started blooming.  I used it on roses where I was having problems with powdery mildew, rust, and black spot.  Not only did all these problems vanish, but the roses bloomed more than they have in years. Oh, and it got rid of the aphids and caterpillars that were eating my roses too. I used this on irises where I was having problems with white flies.  Yep, got rid of them, and even helped irises to bloom that were in shade, and had not bloomed since the plants around them had grown up and shaded them.

I have only one complaint.  The label says it will last 6 weeks, but my experience has been that it lasts only about 3 weeks.  This year, I'm going to try using it every month - until money runs low - and see how that works.  It would be nice if the plants built it up and stored it internally so that over time not as much would be needed.  However, I've never seen anyone report on long term, continuous use over several years, and whether any of it seems to stay in the plants long term.
UPDATE 7-15-13:  I was wrong. It only works on fuchsia mites for a brief time, and only on smaller fuchsias. If you have large fuchsias (like mine, 7 to 8 feet tall)it is completely ineffectual. I have also been disappointed to find roses with black spot and powery mildew - and caterpillers eating the few good leaves and new buds. My longer term experience with this product is that it does not work as well as I initially thought. This stuff is great. It is the only thing I have found to kill fuchsia mites. I have 3 different kinds of fuchsias--all of which have problems with the mites to some extent, and this has worked on all of them. Besides fuchsias, I've used it on lots of different plants. I have an Angel's Trumpet that kept dropping its leaves, and having only a few flowers. The leaves had something powdery and black under them. I used this stuff, the leaves stopped dropping, the black disappeared, and the plant started blooming. I used it on roses where I was having problems with powdery mildew, rust, and black spot. Not only did all these problems vanish, but the roses bloomed more than they have in years. Oh, and it got rid of the aphids and caterpillars that were eating my roses too. I used this on irises where I was having problems with white flies. Yep, got rid of them, and even helped irises to bloom that were in shade, and had not bloomed since the plants around them had grown up and shaded them. I have only one complaint. The label says it will last 6 weeks, but my experience has been that it lasts only about 3 weeks. This year, I'm going to try using it every month - until money runs low - and see how that works. It would be nice if the plants built it up and stored it internally so that over time not as much would be needed. However, I've never seen anyone report on long term, continuous use over several years, and whether any of it seems to stay in the plants long term.