Ladybugs to control mealy bugs
 

Tell me if I am being naive. I found 2 mealbugs on one of my orchids in my bedroom. I also have orchids in my living room and there are always ladybugs on them. I cleaned the mealy bugs off with alcohol and relocated several ladybugs on the plant that had the mealy bugs. Am I naive to think this will work or should I just get some Bayer 3:1 and treat? Thanks for any advice. -Mel