• Relatively fast control
  • Inexpensive


  • Slower than Advion®
  • Requires low-volume spreader

Active Ingredient: 0.73% hydramethylnon

Similar Products: any with hydramethylnon (Amdro®, etc.)

Application Rate, Broadcast: 1 – 1.5 lbs. per acre

Speed of Control: relatively fast, 2 – 6 weeks

Duration of Control: depends on reinvasion pressure; two applications per year are usually needed

Approximate product cost: $10.00 per pound, $10 – $15 per acre

Best used for: relatively fast, inexpensive control in commercial situations

Best season for application: whenever ants are foraging for bait, works especially well in the late summer and fall

Sources: lawn and garden centers, farm supply, etc.

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. Avoid direct exposure of animals to ProBait granules.

Mixing with other products: ProBait® is approved for mixing with Extinguish® and other baits

General Comments: ProBait® is virtually identical to Amdro® Pro, except on its label. ProBait® IS NOT labeled for range or pasture use that supports animals used for food or feed. Otherwise, it is a good, relatively fast, inexpensive bait.

Manufacturer:  Zoecon (Central Life Sciences)

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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