Mars has been told it has a case to answer over a challenge to its claim that some of its Nutro dog food products have a limited number of ingredients.

A US judge in Illinois dismissed a motion to dismiss the claim by Mars Petcare and said the case – Bakopoulos v. Mars Petcare US Inc. – could proceed.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

The lawsuit, filed last year, concerns Mars Petcare’s Nutro Ingredient Diet products.

Limited-ingredient diet pet foods are often chosen by pet owners for their health benefits or because their pet has a particular allergy.

But a group of dog owners accused Mars of misleading consumers about the products’ contents. They said Nutro was marketed as having ten or fewer key ingredients per bag and containing no chicken, wheat or soy. However, they allege that testing revealed more than trace amounts of chicken, wheat and soy in the products they purchased.

They brought claims for breach of warranty, unjust enrichment and violation of consumer protection laws.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

In a ruling on Monday (12 July), seen by Just Food, Chicago-based US district judge Manish Shah said the case made by Illinois residents needed to be answered although he dismissed claims brought by residents of other states for lack of jurisdiction.

He also ruled that the claims related to products that the named plaintiffs had not actually bought must be dismissed for lack of standing and additionally dismissed claims for future injunctive relief, as opposed to monetary damages.

Just Food has asked Mars for its reaction to the ruling.

Just Food Excellence Awards - Nominations Closed

Nominations are now closed for the Just Food Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Winning five categories in the 2025 Just Food Excellence Awards, Centric Software is setting the pace for digital transformation in food and FMCG. Explore how its integrated PLM and PXM suite delivers faster launches, smarter compliance and data-driven growth for complex, multi-channel product portfolios.

Discover the Impact