Twist tie of Isomate C, a method of dealing with the codling moth. The overwintering codling moth emerges after a known number of degree-days, and males and females will mate at dusk (at over 17C only - particular, aren't they?). The female emits a sex-attractant pheromone to let the males know where they are. The twist ties contain the same pheromone, and, spread throughout the orchard, will confuse the males so they can't find the females (or at least, only by chance). Your orchard has to be at least one acre in size for this to work, otherwise you will attract all codling moths in the vicinity. In the past 5 years, in conjunction with another technique which I will picture later, I have been able to cut codling moth damage down from over 25% to around 5% last year.