Paper wasps, or "umbrella wasps" as they are sometimes called, are usually a docile type of insect and generally considered helpful to the environment as they feed on harmful garden pests. The nests tend to be built away from busy areas, but occasionally get a little too close for comfort. In these cases a helpful insect can become a hindrance and. if you're allergic to wasp stings. they can become outright deadly. Thankfully, killing paper wasps and destroying the nest isn't complicated.

Outdoor Nests

If the wasp nest is outdoors, the first step is to locate the source. While you may be able to see wasps entering and leaving, the nest itself might be tucked away in a drain or other well-hidden area. The nickname "umbrella wasp" comes from the umbrella-like shape of their hive; the term "paper wasp" is based on the pulp-like material they use to create the nest. When you've located it, wait until nightfall when the wasps are inactive to lessen the possibility of being stung. As an extra precaution, wear a long-sleeve shirt and long pants or jeans, especially if you are (or suspect you might be) allergic to wasp stings. The best option for an outdoor nest is an aerosol spray with a reach of at least 20 feet. Soak as much of the nest as possible, concentrating on the entrance. Don't take any action directly after that, but wait a few hours for the spray to take full effect before removing and disposing of the nest. If possible, wait until the next day and spray the nest once more before removing it to be certain no more wasps are alive.

Indoor Nests

Indoor nests are a little trickier than outdoor, mainly because spraying an aerosol chemical is inconvenient and toxic in areas with little ventilation. The nest also is sometimes more challenging to find, hiding inside a cupboard, behind a wall or similar spot that's difficult to reach. Once you've found it, follow the same precautions as you would for an outdoor nest: Wait until dark and wear protective clothing. Instead of a liquid or aerosol insecticide, use one in powder form; these are often found in a hardware store or well-stocked supermarket, although they aren't as popular as their aerosol counterparts. Use the applicator that comes with the powder. If it doesn't come with one, a small squeeze bottle will work. Without spilling any on your hands, apply the powder to the nest; depending on the location, you may need to drill a hole near the site from which to drop the powder. Cover your nose and mouth with a protective mask so you don't inhale any of the insecticide. As with the outdoor nest, give the chemical enough time to work before disposing of the hive.

Source:

Paper Wasps Explained

Wasp And Bee Control

More Information:

Controlling Wasps, Hornets, and Yellowjackets