I use regular old Isopropyl Alcohol (rubbing alcohol) for mealybugs. Pour a little into a cup, dip in a cotton swab and touch the mealies with the tip and wipe them right away. I also keep a spray bottle filled with the Isopropyl Alochol for any plant that might have a lot of bugs. I just move the plant to a shady spot and spray it with the alcohol.
