Currently, people are more aware of better ways to deal with pests without using chemicals or being inhumane. We all agree that even a pest has value, and so it is better to control than eliminate them. Wasps are important pollinators, natural predators, and seed dispersal agents, which makes wasp trap the ideal solution.
While they can also kill some beneficial insects, they can be very helpful in eating crop-destroying bugs, such as grubs, caterpillars, and weevils. They are so useful in this respect that farmers will sometimes ship wasps in as a natural pest control for their crops. Now that’s an all-natural pesticide!
This is something I never heard before today, but wasps actually help pollinate plants! Honeybees are far more effective because of their hairy legs, but still, considering the alarming health of our bee colonies, we need all the help we can get, and wasps do help pollinate.
While wasps have many benefits, sometimes it becomes necessary to control the wasps. There exist a lot of options, but most of them involve complete annihilation, which robs the gardener of the benefits of wasps. However, wasp traps are a perfect because their aim is to control wasps while allowing the gardener to get the benefits. So, what are wasp traps? Chineseherbshealing.com gives a precise definition.
It mainly refers to the nests of Polistes mandarinus Saussure, which is an insect in the family Vespidae. However, sometimes the nests of Polistes olivaceus (DeGeer), Polistes japonicus Saussure, or Parapolybia varia Fabricius, etc. are also used medicinally too. Other names include Nidus Vespae, Honeycomb, Hornet Nest, and so on. It is produced all over China, especially in the south. It is usually collected during autumn and winter. Also, the following steps are drying in the sun, or slightly steaming, removing dead wasps and wasp nest eggs, and then drying in the sun. It is used raw or fried.
Sourced from: http://www.chineseherbshealing.com/wasp-nest/
Arizona.edu explains one of the versions of a DIY wasp trap.
Traps can be used when large numbers of yellow jackets are pestering outdoor diners. Commercial traps are available in reusable and disposable designs. I have always used a homemade trap made from a five-gallon bucket, a stick, a piece of wire, and a fish or meat scrap. A piece of fish or meat is tied to the wire and suspended from the stick over the bucket above a few inches of soapy water. The yellow jackets eat so much that they cannot fly very well. When they take off, they hit the side of the bucket and fall into the soapy water where they sink to the bottom. Some yellow jackets will still pester diners, but they eventually find the bucket.
The bottom line is that wasps have numerous benefits, so it is much better to control them rather than use inhumane methods available. wasp traps are perfect for any gardener who needs to control wasps.