Where did it go? (Free if you know where to look) - A wire coat hanger (free with your dry cleaning) - A "transmission fluid" type funnel. The facts: Insecticides may work on adult beetles, but they also kill beneficial pollinators, like bees. For example, some sources advise you set attractants and pheromone traps to help lure male beetles toward traps and ultimately kill them. If you have existing plants that are Japanese beetle favorites, you might want to consider if it makes economic sense to remove and replace them, versus treating them with chemicals. The beetles that avoid the trap will subsequently treat your well-manicured landscaping as a full-service buffet. My trick is to empty the bags into a grocery bag every day while they are still alive and kicking. Japanese beetle traps are most effective for controlling large numbers of beetles. It drew a zillion out of the tree. Master Gardener: Japanese beetle traps can work all too well. They have been attracting beetle from miles around. Once the bag is filled, you just have to replace it â¦ Most Japanese beetle traps consist of a ventilated bag or box which contains two chemical attractants: a sex pheromone and a floral lure. An added tip I heard was to put a bucket of soapy water under the trap. In addition to pesticides, there are biological and physical controls you can try to lessen the Japanese beetle population, such as shaking visible beetles into a bucket of soapy water to drown them. Japanese beetle traps do work in that they capture adult beetles. Japanese beetle traps come with bait that lures them in. They fly to the trap in droves, where they crawl or fall into the bag and can’t get out. However, placement is critical. Skip the Japanese beetle traps. The traps are extremely effective at attracting and capturing Japanese beetles. Hereâs the thing with Japanese Beetle traps. This way you can re-use the funneled bag it comes with. Beetle traps use a scented bag or liquid to lure beetles into a confined space to trap them. Japanese beetles can cause extensive damage to plants, chewing on leaves and blossoms.The beetles emerge from the ground during early June and are active up to August. This year, a new and more massive infestation appeared on our virginia creepers as well as thee beech tree. Take care! I took it out of the wrapper and inserted it in the hole in the cardboard at the top but wondered if there is anything further to do, like punch holes in top of plastic lure container? They can be useful in two special situations. Plants most resistant or unattractive to the Japanese beetle include American bittersweet, dogwood, forsythia, hydrangea, lilac, paper birch, pine, silver maple, spruce, white poplar, and yew. Japanese beetle infestations are horrid. By the Midland Daily News. Do not be one of those people that figure that out too late. However, one criticism of Japanese beetle traps is that they are too efficientâdrawing such large numbers of beetles to them that they cannot trap them all. I have one of the best plants to attract JB, a 40 foot length of grape vine. Hopefully Iâve convinced you why not to use Japanese beetle traps. By putting one out in early summer, you can get an idea of how bad the infestation is, which can help you make better decisions about how aggressive you need to be in your control program. If you decide to apply insecticides, you'll need to start when the beetles are first observed and you may need to reapply the pesticides multiple times throughout the season. If safety is a major concern, you might want to at least give traps a try before moving on to more extreme measures. love it. I live on 5 acres so I am my own neighbor. Click to see full answer. The problem is, the traps attract about four times as many beetles as would normally be in your yard, and only 50% to 75% of them will actually end up in the bag. The remaining 25% end up near the trap feeding on plants. I use( 2 ) traps spaced about 40 yds. How Do Japanese Beetle Traps Work? Most Japanese beetle traps consist of a ventilated bag or box which contains two chemical attractants: a sex pheromone and a floral lure. Published 5:35 am EDT, Sunday, July 1, 2012 catching these beetles after last years bad episode is working Great. The bait is made with pheromones (a natural sex attractant), as well as floral scents that the beetles canât resist. You simply dispose of the bag, and put on a fresh one, and the process starts all over again. You can let that sucker FILL. So intoxicating, in fact, that the blissful beetles become paralyzed and are easily consumed by predators. Research has shown that Japanese beetle traps only trap about 75% of the beetles they attract. 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