- Relatively fast control
- Widely available at retail stores
- Inexpensive compared to high-volume baits
- Labeled for landscaped areas, and other non-cropland areas
- Slower than Advion
- Requires low-volume spreader
Active Ingredient: 0.73% hydramethylnon
Similar Products: any with hydramethylnon (Amdro® Pro, Probait®, etc.)
Application Rate, Broadcast: 1-2 pounds per acre (2-4 ounces/ 5000 square feet)
Application Rate, per mound: 2-5 level tablespoons/mound, apply no more than 2 pounds/acre.
Speed of Control: Relatively fast, 2-6 weeks
Duration of Control: varies with reinvasion pressure; 2 applications per year usually needed
Approximate Cost: $10-$12 per pound retail
Best used for: Relatively fast, inexpensive control in home lawns and turf
Best season for application: whenever ants are foraging for bait, but particularly effective in early spring or late summer and fall
Sources: Many retail stores and garden centers
Toxicity: very low; may be toxic to animals if very large quantities are consumed
Agricultural Uses: On grounds surrounding poultry houses (excluding runs and ranges), corrals and other animal holding area. For expanded agricultural uses see the Amdro® Pro product.
Mixing with other products: none labeled
Amdro is a reliable product readily available in the retail market. Other than Advion, it is the fastest-acting treatment available. Some poor performance of the product has been noted in very hot, dry conditions, or very cool wet conditions.
Manufacturer: Ambrands/Central Garden and Pet
Web site (label and MSDS links): http://www.amdro.com/Labels
This site is intended to cover only broadcast-applied fire ant control products. Literally dozens of products are available as individual mound treatments. Contact your local Extension Agent or return to https://fireant.tamu.edu for more information on individual mound treatments.
Because of the constantly changing availability of fire ant insecticides, it is virtually impossible to include every product on the market. Mention of a product on this site does not imply an endorsement by Texas A&M AgriLife Extension Service, the Southern Region IPM Center or any cooperating state. Lack of mention does not imply that the product is not an effective fire ant control product.