Central Life Sciences, the makers of Starbar products, announced Aug. 12, 2025, that Golden Malrin Fly Bait (EPA Reg. No. 2724-274) will be reclassified by the U.S. Environmental Protection Agency (EPA) as a restricted-use pesticide (RUP), effective as of July 29, 2025.

For more than 40 years, Golden Malrin products have been a trusted and effective solution for controlling nuisance flies in agricultural, commercial and residential settings. However, due to increasing incidents of product misuse, particularly involving the illegal poisoning of wildlife – the EPA has taken action to limit access to methomyl-based fly baits such as Golden Malrin Fly Bait.

“This regulatory change underscores the importance of using pesticides responsibly and in accordance with the label,” said Mark A. Taylor, vice president of innovation and technology at Wellmark International, a subsidiary of Central Garden & Pet Company. “We remain committed to supporting our partners and customers through this transition and ensuring Golden Malrin Fly Bait continues to be used safely and effectively by licensed professionals.”

Key transition details

  • 120-day sell-through period: A 120-day window will begin following the RUP effective date, allowing distributors to sell existing inventory that does not bear the new RUP labeling. After this period, all non-RUP labeled product must be removed from commerce.
  • RUP label availability: Golden Malrin products with RUP labeling will begin shipping before Nov. 26, 2025.

Licensing requirements

  • Only licensed dealers may purchase and distribute RUP-labeled Golden Malrin products.
  • The product may only be sold to end users who are certified to apply restricted-use pesticides, in accordance with state and federal laws.

Recommended actions for distributors:

  1. Review and manage current inventory to comply with the 120-day sell-through deadline.
  2. Obtain a state RUP license if intending to continue sales of Golden Malrin products.
  3. Inform customers of the upcoming regulatory changes.

For more information or assistance with compliance planning, distributors and customers are encouraged to contact their Central Life Sciences representative.

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To explore additional fly control solutions, including rotational bait options like DuraStrike Fly Scatter Bait, QuikStrike Fly Bait and Cyanarox Insecticidal Bait, visit the Starbar website.

—From a Central Life Sciences news release