Ortho Orthene Fire Ant Killer – 6 oz, Fast-Acting, Low Odor Formula

Ortho Orthene Fire Ant Killer — 6 oz

When you spot fire ants marching across your lawn or along the edge of a patio, you want a solution that starts working quickly and fits into your outdoor routine. Ortho Orthene Fire Ant Killer is a 6-ounce formulation designed for home use, delivering a fast-acting approach that targets the entire mound. With a 50% acephate active ingredient, the product is built to take aim at the colony while you go about your day.

One of the standout aspects is the reduced-odor formula. It is crafted to minimize the scent, making applications less intrusive on warm days or near outdoor seating areas. You won’t need to water in the product, which simplifies the process and helps you treat mounds without extra steps. Plus, the built-in seal opener means you can access the contents without searching for a separate tool, keeping the task quick and straightforward.

What to expect

Expect rapid onset—visible activity can begin to decline within hours after application. Over time, the product is designed to target the entire mound and the queen, helping to reduce ongoing activity. The product offers up to six weeks of control, providing a longer window of relief from active colonies. These effects depend on environmental conditions and ant behavior, and results may vary by mound size and infestation level.

• Starts to kill in hours after application
• No watering-in required, making outdoor treatment simple
• Reduced odor formula for a more pleasant application
• Built-in seal opener—no tools needed to access the product
• Contains 50% Acephate for active pest control

Best-use scenarios

Ideal for lawns, garden beds, decks, and walkways where ants gather. The product works well around patio furniture and play areas, helping you manage activity without heavy preparation. Use during dry conditions for optimal absorption into the mound.

• Direct application to the mound and surrounding perimeter
• Appropriate for outdoor spaces with human and pet activity, following label directions
• Part of a routine to reduce visible ant traffic over weeks

Why homeowners reach for Ortho Orthene

The combination of rapid action, mound-wide reach, and user-friendly packaging makes this product a popular choice for those managing seasonal ant activity. While results can vary, many customers notice a decrease in mound disturbances and ant activity in the days following application. The 6-ounce bottle is easy to tuck into a shed or garage shelf for seasonal readiness.