HELP! Need to kill mealybugs
I think I have mealybugs on my orchids. I have about 16 phals in close proximity to one another and I have no idea how but yesterday I found what I believe to be mealybugs on one and today noticed some teeny tiny whitish/clearish dots on another phals roots. I think these are mealybugs. So, I am going to need to treat all of my phals as a precaution.
I understand that a solution of rubbing alcohol/insecticidal soap/water is best. What % of each should I mix together in a bottle? Will this harm my plants at all? Do I need to wash it off after I am done? How often should I continue to spray? Any other ideas or suggestions would be helpful.