Wasp/hornet trap: a mason jar and a funnel. Put watered down orange juice in the jar. The wasps/hornets are attracted to the fruit juice so they'll go down the funnel but won't be able to find their way out and eventually drown. Pet and kid safe.
Homemade Wasp Trap 1) Cut the neck off a plastic pop bottle. 2) Remove the bottle cap and flip the neck upside down and place it in the bottle opening that you just cut. 3) Tape together using packing tape or duct tape. 4) Bait the trap. The easiest is sugar and water, but I've also read that meat works well in the spring and early summer because wasps are attracted to protein, or other options are sugar and water, water and vinegar, beer, soda, even laundry detergent.
THIS WORKS!!! Just killed a HUGE wasp flying around my bathroom! Make a natural insecticide with peppermint oil. Mix 2 cups (500 ml) of water with 30 drops of peppermint essential oil and 2 Tbsp (30 ml) of dish soap in a spray bottle. Spray this solution on wasps and nests.