Ortho

Ortho Orthene Fire Ant Killer1, 12 oz — Kills Queen & Destroys Mounds (2-Pack)

High-performance patio lawn and garden made for confident daily results

$34.40

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Why customers choose Cera Garden

Fast, effective fire ant control for your yard

Fire ants can quickly dominate a lawn, building bothersome mounds and disrupting outdoor time. Ortho Orthene Fire Ant Killer1 is designed to address the problem at the source: the mound and the queen. This fast-acting treatment begins to work in about 60 minutes after application, helping you reclaim your outdoor space sooner. Each 12 oz bottle is capable of treating up to 162 mounds, delivering broad coverage for typical home lawns. A key convenience is that no watering-in is required, making the process straightforward for busy homeowners. It’s suitable for use around ornamental plants, including flowers, shrubs, and trees, helping protect garden beds and landscape accents.

Fast-acting, queen-focused mound control

Key benefits you may notice include:

  • Kills the queen and destroys the mound to reduce active colonies.
  • Keeps working after application and begins killing in minutes, potentially allowing faster outdoor enjoyment.
  • Sprinkle-and-go application with no watering-in required, saving time and effort.
  • Each bottle covers up to 162 mounds—great for typical lawns and surrounding areas.
  • Designed to fit into Ortho’s 2-Step System to help prevent new mounds for months.

How to use for best results

Follow label directions to determine how much product you need based on mound size. Apply when ants are active for best results. Simply sprinkle the powder over the mound and let it work, without the need to water in. For large landscapes with multiple mounds, repeat on active nests as needed. For ongoing protection, consider pairing with Ortho Fire Ant Killer Broadcast Granules as a second step to help deter new mounds for up to six months.

Where to use

  • Home lawns, borders, and turf areas.
  • Around ornamental plants, including flowers, shrubs, and trees.
  • Along walkways and garden beds where mounds may appear.

Safety and expectations

Always follow the label for amount and safety guidelines. Use as part of a broader yard-care plan to manage fire ants without asserting guaranteed outcomes. Treating mounds when ants are active tends to produce the best possible results for many outdoor spaces.

FAQ

Q: How quickly does Ortho Orthene Fire Ant Killer1 work?

A: Kicks in within about 60 minutes, killing the queen and destroying the mound to help reduce reinfestation.

Q: How many mounds can one bottle treat?

A: One bottle covers up to 162 fire ant mounds with no watering-in required.