Black Flag Foaming Wasp & Hornet Killer — 14 oz Aerosol, 2-Pack

Overview

Meet a practical outdoor pest solution from Black Flag. The Foaming Wasp & Hornet Killer delivers a dense blanket of foam that clings to nests on contact, helping you address wasps, hornets, yellow jackets, and related insects with less mess and quicker knockdown. When used as directed, this 14-ounce aerosol provides a reliable way to treat nests from a distance, giving you the confidence to manage outdoor spaces like patios, sheds, and yards.

Key benefits at a glance

• Foaming action blankets the nest, enabling contact with wasps, hornets, mud daubers, and yellow jackets for effective treatment.
• Jet spray reaches up to 20 feet, allowing treatment from a safe distance and reducing exposure near the nest.
• Designed to target a range of stinging insects outdoors, including common yard nuisances.
• Low-residue formula minimizes staining on most siding and outdoor surfaces; ideal for exterior use.

How to use effectively

Prepare the area, then stand up to 20 feet away from the nest. Aim and spray while slowly walking toward the nest until the foam wets every part of it. Treat the nest thoroughly and wait at least 24 hours before removing it. Remember to treat the nest, not individual insects, and spray with the wind at your back to maintain control. If spraying near siding, test a small inconspicuous area first and recheck after a few hours for any unwanted effects.

Tips for outdoor applications

• Apply at sunset when insects are less active and easier to reach.
• Keep the wind at your back to maintain accurate direction and minimize drift.
• Test on a small area first if you plan to spray near home siding to avoid staining.

What you get

This package includes two 14-ounce cans, making it convenient for seasonal maintenance or handling multiple nests around the property. The foaming formula is designed to expand to cover the nest and surrounding entry points for thorough treatment.