10 Best Ant Sprays 2026 in the United States

The Ortho Home Defense Insect Killer is a large 1.33-gallon spray designed for both indoor and outdoor use, especially around home entry points like doors, windows, patios, and foundations. Its active ingredient is bifenthrin at 0.05%, a common and effective chemical for killing ants, cockroaches, spiders, and many other pests. It offers long-lasting protection for up to 12 months on indoor non-porous surfaces, helping prevent repeat infestations without frequent reapplication.

The Ortho Home Defense Max Indoor Insect Barrier is a convenient ready-to-use spray designed to kill ants and a variety of other common household pests like roaches, spiders, fleas, and ticks. It contains 0.05% bifenthrin as its active ingredient, which is known for effective pest control with a lasting barrier effect. One of its biggest advantages is its long residual protection—up to 365 days on nonporous indoor surfaces—helping keep your home pest-free for a full year after application.

The Ortho Home Defense Max Indoor Insect Barrier is a convenient spray designed to kill and prevent ants along with various common household insects like roaches, spiders, fleas, and ticks. It stands out for its long-lasting protection, claiming to shield your home for up to 365 days on nonporous surfaces, which is great if you want a year-round barrier without frequent reapplication. The spray uses a battery-powered, one-handed applicator that delivers a steady mist, making it easy to use without bending or pumping. This feature is particularly helpful if you have larger areas to cover or want a quick, even spray around doors, windows, kitchens, bathrooms, and basements.