Refill Kit for use with Defenders Horse Chestnut Leaf Miner Pheromone Traps. Help prevent damage and defoliation of your horse chestnut trees this summer by using Horse Chestnut Leaf Miner Pheromone Traps, from Defenders, to disrupt the burrowing insects’ breeding cycles and protect against premature senescence and leaf-fall. The pheromone-coated glue is resistant to drying out, soaking, and prolonged exposure to UV sunlight.
For best results hang traps from early Spring through to late Summer.