| Jacky, if you are growing in bark or other big chunky stuff, the mealies will be living down in the mix sucking on your plants roots. This is the usual reason for the difficulty in getting a complete kill. Since I don't grow in that kind of open mix, I have not had the problem to solve. One member of our society repotted slowly, spraying the roots as he went, and keeping the 'clean' plants very separate from the infected plants. Don't know if this worked for him. I'll have to ask next time I see him. Don't be tempted to soak the pots in some poison or other, and reuse the same liquid for multiple plants. In fact, you should probably sterilize the bucket between plants and fresh mix, using something like 10% bleach, or Physan 20 or equivalent, but you would need to keep the surface of the bucket wet for a while (20 min?) to be sure it is sterilized. I once spread virus thru a collection of a few hundred plants, by soaking the just unpotted plants (lots of open wounds from bark removal) in a common bath of metaldihyde to eliminate a bush snail problem (which didn't work). To be sure, your plants may not have open wounds if you have not disurbed them recently, but why take a chance. Cynthia, Prescott, AZ  |