Yesterday I've noticed SCALE parasites on couple of my orchids. I've seen
scale on my ferns, but that was killed off by Bayer Dual Action Rose and
Flower Insect Killer.

It is very effective on scale, most effective of everything I used so far.
Can I possibly use it on orchids (phals, cattleyas, dendrobium) w/o damaging
plants? Has anybody in this group used commercial bug sprays on their
orchids without damaging them?

Thanks for your input, - Maggie's Mom.