Trying to sound like I know what I'm talking about here, when I really don't.... Screen would work if the chiles were only pollinated by flying buzzing things. However, I came acorss a statistic (yeah, I know about statistics :-) that up to 40% or more of chiles are either self or wind pollinated. Screen would not work in that case. The only remedy I have ever seen employed is distance. Not the answer you'd like to hear, I know. Sorry. -Jim C MWPH Trying to get through all 300 messages piled up from vacation....