Published on Wednesday, April 8, 2026
By the A.M. Costa Rica staff

Costa Rica will phase out the use of the broad-spectrum insecticide Fipronil, citing risks to pollinators, the Ministry of Health announced.

Fipronil is widely used as an active ingredient in agricultural pest control, as well as in flea treatments for pets and household roach baits, according to authorities.

However, officials warn the chemical is highly toxic to the environment and to animals, including pollinators such as bees. Residues can contaminate water sources, posing a threat to fish, while also harming reptiles, birds, poultry and small mammals, including rabbits. These impacts present significant risks to food security, environmental health and human well-being.


Under the decree, the government will implement a two-year phaseout plan aimed at first restricting and ultimately eliminating the chemical’s use nationwide.

 

During the first year after the decree takes effect, Fipronil may be used only under strict technical controls established by the health authorities. Its use will require prior authorization, and new regulations will govern its importation, manufacturing and commercialization.

Distributors must report existing inventories and comply with handling requirements throughout the transition period.


The regulation also grants farmers an additional year to use, under controlled conditions, any remaining supplies purchased before the decree was issued.

Beginning in March 2028, the importation, manufacture and use of Fipronil will be fully prohibited in the country.

The decree allows for limited exceptions in cases of phytosanitary emergencies, subject to authorization by the ministry.

Violations of the law may result in product seizures, fines or the closure of businesses found using the chemical illegally.

Authorities said the gradual phaseout is based on technical evidence showing Fipronil’s harmful effects on pollinators. The decline of these species directly affects agricultural productivity, crop quality and the stability of food systems.

The Ministry of Public Health oversees both public and private health care systems and is responsible for implementing and enforcing health regulations.

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