Side-by-side comparison based on expert reviews and community consensus.
Amdro Ant Block Home Perimeter Ant Killer Bait
Best Outdoor Perimeter BaitBorax + Sugar DIY Bait
Best DIY Natural OptionPrice
$10-$20
$3-$8
Summary
Designed to stop ants before they ever get inside. Granular bait creates a protective barrier around your home's perimeter for long-lasting outdoor control.
The original homemade ant bait that Reddit keeps recommending year after year. Mix borax with sugar and water (or honey) for a cheap, effective colony killer using the same active ingredient as Terro.
Pros
- Creates a protective barrier around the entire home perimeter
- Granular format is easy to spread and weather-resistant
- Top pick from The Spruce for comprehensive, long-lasting ant control
- Targets ants outdoors before they enter the home
- Extremely cheap — borax and sugar cost almost nothing
- Uses the same borax active ingredient found in commercial baits like Terro
- Highly customizable — adjust sugar-to-borax ratio for different ant species
- Recommended across multiple Reddit communities in different countries
Cons
- Not suitable for indoor use
- Granules need reapplication after heavy rain
- Slower to act than indoor gel or liquid baits
- Requires mixing and monitoring — less convenient than pre-made stations
- No standardized dosage, so effectiveness can vary with your mix ratio
- Liquid mixture can dry out or attract other pests if left uncovered
Our take
If ants keep finding new ways in no matter what you do indoors, Amdro Ant Block is how you cut them off at the source — The Spruce's top pick for comprehensive perimeter defense.
If you want to skip the store entirely, this works — borax is the same active ingredient in Terro, and you can make a huge batch for pennies.
Buy
