Ingredient Index

Is Fipronil banned in Europe?

Banned in EU

As a crop pesticide, yes. Fipronil lost its EU approval for agricultural use in 2017. It is still sold in Europe as a pet flea treatment, and the US registers it for pets, turf, and some crops.

CAS: 120068-37-3 Also seen as: Fipronil, Frontline, Regent

What the EU does

Not approved for crops. Fipronil's approval as a plant protection active substance was not renewed, and it lapsed in 2017, so it cannot be used on EU crops under Regulation (EC) No 1107/2009. It remains available in the EU in a different lane, as a veterinary flea-and-tick treatment for pets, which is regulated separately from food crops.

That split is exactly what drove the 2017 "fipronil eggs" scandal. An insecticide containing fipronil was used illegally to treat laying-hen barns in the Netherlands and Belgium, contaminating millions of eggs and forcing recalls across Europe. The lesson was about enforcement of an existing ban, not a gap in the rules.

Citation Fipronil not approved as a plant protection substance under Reg (EC) No 1107/2009 (approval lapsed 2017); EFSA Journal 2023;21(3):7931 (import tolerances)

What the US does

Registered. The US EPA registers fipronil for a range of uses, most familiarly as the active ingredient in Frontline pet flea-and-tick products, plus turf, structural and termite control, and some agricultural uses. It is a phenylpyrazole that blocks insect nerve signaling.

Because fipronil residues can appear on imports, the EU has set specific import tolerances for commodities such as potatoes and sugar cane rather than relying on a zero level. So the chemical the EU pulled from its own fields still enters the picture through trade, and stays in common US household pet products.

Citation US EPA registered (pet, turf, structural, limited crop uses); 40 CFR 180.517 (fipronil tolerances)

Products that commonly contain it

Fipronil is encountered mainly through:

Pet flea-and-tick treatments such as Frontline, sold on both sides
Turf, termite, and structural pest-control products in the US
Residues on some imported produce, within set tolerances
Eggs only in the illegal-contamination sense of the 2017 EU scandal

What to look for on a label

As a crop input, fipronil is not a food-label ingredient:

On pet products, fipronil is listed as the active ingredient
Buying organic avoids synthetic insecticide residues on produce
In the EU, crop use is barred; pet use is a separate, legal category

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Frequently asked questions

Is fipronil banned in Europe?

As a crop pesticide, yes; its agricultural approval lapsed in 2017. It is still sold in the EU as a pet flea treatment, which is regulated separately.

What was the fipronil egg scandal?

In 2017 a fipronil-containing product was used illegally in laying-hen barns in the Netherlands and Belgium, contaminating millions of eggs and triggering EU-wide recalls.

Is fipronil used in the US?

Yes. The EPA registers it for pets (Frontline), turf, termite control, and some crops, and the EU sets import tolerances for certain commodities.

Related ingredients

Primary sources

Last reviewed October 1, 2026 · How we assign statuses