I find that Orthene (acephate) and Merit (imidicloprid) are quite effective.

I discovered some recently on some cymbidiums that were "hidden" amongst others in the greenhouse, and decided to "get serious", so used a combo of the two plus Enstar II (kinoprene-s), an insect growth regulator.

boisduval scale
 

i do have that problem also
i am in trouble here

Not really. Just don't wait before applying a decent insecticide.

Thanks, Ray. I have both so I'll try that.

Marilyn

thanks
 

thanks

Ray are you using the Merit systemic granules or the liquid? I just found mealies on one of my Catts, and my Aer. I wiped with alcohol, and am treating with Bonide systemic granules, which I believe has the same active ingredient as Merit. The problem with the granules is they wash through the pot very quickly.