Amdro Yard Treatment Bait

Amdro Yard Treatment Bait


  • Speed of Amdro®, longer duration of control of an IGR product (Extinguish®)
  • Formulated to be applied with fertilizer spreader
  • Labeled for mound treatment lawns, landscaped areas, and other non-cropland areas
  • Widely available in retail stores


  • Slower than Advion®
  • No pasture label (versus Amdro® Pro or Extinguish® Plus)
  • Large volume needed for large land areas, best for areas 0.5 acre or less
  • Expensive compared to low-volume baits

Active Ingredient: 0.0172% s-methoprene and 0.036% hydramethylnon (i.e. Extinguish® plus Amdro®)

Similar Products: Extinguish® Plus (or Amdro® Pro + Extinguish® hopper blend)

Application Rate, Broadcast: 5 lbs. per 5,000 to 10,000 sq. ft.

Speed of Control: relatively fast, 1-2 weeks

Duration of Control: 2-12 months, one application per year is may be sufficient, but depends on reinvasion pressure.  Spring and fall application may be preferred.

Approximate product cost: ~ $20 per 5 lb bag (5,000 to 10,000 sq ft) or $170-$340 per acre

Best used for: Any situation where relatively fast control is needed

Best season for application: Any time ants are foraging for bait

Sources: Department Stores, retail outlets, garden centers and agricultural suppliers, online

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) or corrals and other animal holding areas which may be fenced pastures and rangeland used solely to support companion animals (e.g., horses) not used for food or feed.  For expanded agricultural uses look for the Amdro® Pro or Extinguish® Plus product.

Mixing with other products:  Generally unnecessary because this is a blend of a toxicant and an insect growth regulator.

General Comments: Amdro® Yard Treatment Bait combines the speed of hydramethylnon with the longer duration of control of an IGR product such as methoprene (Extinguish®). It is a good product that will likely give satisfactory results with a yearly maintenance application.  Not recommended for single mound treatments.

Manufacturer:  Ambrands/Central Garden and Pet

Web site:


This site is intended to cover only broadcast-applied fire ant control products and slow acting fipronil containing granular products. Literally dozens of products are available as individual mound treatments. Contact your local Extension Agent or return to 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.



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