I have been having the same problem.
I have tried many common organic recommended solutions... nothing works.
My thought is to get rid of the main reason they are there to begin with first..
Use a fungicide to remove fungus and algae which is what they feed off of and attracts them.
Perhaps...
Thanks for your responses...
I have used BT in the past. I just think it is far better to eliminate the possibility of attack with a screened enclosure than gambling whether pre spraying BT on your plants will prevent the moths from attacking. In my experience BT only works to kill the worms...