Though there are lots of reliable wasp traps available on the market, you can actually easily make your own with a few items you are likely to have lying around the house. What you will be creating are single chambered wasp catchers, as these are the easiest type to make. The only problem with single chambered catchers (and this is a problem even commercial ones encounter) is that you have to make sure that the wasps are dead before you proceed to clean it out and rebaiting the trap. The procedure for making sure of this is discussed later in the article.
4 plastic bottles (old soda bottles are good)
1. Take the plastic bottles and cut off the necks of the bottles. This is the part of the bottle that is cone shaped. It includes the area where you screw on the bottle cap. What you want to end up with is a set of necks and a set of bottles that have flat wide openings.
2. Flip the necks and put them into the bottle openings. You will see that the bottle will stop the entire neck from falling in. If it does fall in, you've cut it too small. So what you have is a bottle with its neck turned upside down or a v-shape that leads to a small opening (where the bottle cap used to be.) You also want to make sure that the opening isn't too near the bottom of the bottle, this is to ensure that they don't figure their way out.
3. With the necks in place, take a drill and drill two small holes on the sides of the bottles. Put screws into the holes. The screws will hold the necks and bottles together.
4. Rub the sides of the neck with petroleum jelly. If wasps don't fly straight in, the jelly will help them slide down.
5. Tie some string around the screws and then tie the two ends together to create a loop. This is what you will use to hang the traps.
6. Pour or drop some bait in through the hole.
7. Hang the traps in different areas of the affected area so as to attract several wasps.
Types of Bait:
Wasps are attracted to sweet flavors and protein. You can try using meat in your trap, but this may rot and smell after a few days and only attract flies. Not to mention the fact that it may be disgusting to clean out. Try using mushed fruit like grapes or liquid mixtures to trap them such as soda which lost its fizz, lemonade, or sugar water. You can mix any of these sweet liquids with a bit of vinegar or a but of dishwashing liquid or laundry liquid. These agents will kill the wasps.
When you need to clean your wasp traps, make sure the wasps are dead by pouring some hot water into the trap and making sure the wasps have drowned before you dismantle the trap. To dismantle the trap, just take the screws out and then proceed to clean the trap, rebait, and reapply the jelly. Flush down any dead wasps and don't simply throw them away. Dead wasps tend to emit pheromones which other wasps can smell. These pheromones warn the others that they have been killed and this can aggravate the other wasps.