MATTAWAN, Mich. (AP/WOOD) — A Van Buren County laboratory has halted pesticide testing on beagles, shortly after the Humane Society of the United States raised concerns about the animals’ treatment.

Corteva Agriscience, a division of DowDuPont Inc., said Monday that Brazilian regulators had approved a waiver that’s allowed the company to end testing. The testing was contracted to Charles River Laboratories in Mattawan, which is about 10 miles west of Kalamazoo.

We’ve been working to refine, reduce, & replace animal tests for years. Today we’re pleased to announce our efforts resulted in a waiver & we can stop the study. We’ll make every effort to rehome the animals. Please read our full statement. pic.twitter.com/SQc5RJg41M— Corteva Agriscience™ (@corteva) March 18, 2019

The Human Society last week released an undercover investigation into the lab. The group said one experiment involved 36 beagles that were being used in a yearlong pesticide test for a product being developed by Corteva.

While toxicitiy tests for pesticides, drugs, dental implants and other products on hounds is legal and sometimes even required by the government, the Humane Society claimed the testing in this case was not required by the government and that DowDuPont had admitted it is scientifically unnecessary.

Corteva now says it’s working to help find homes for the animals involved in the study.

Humane Society President and CEO Kitty Block calls the decision “a huge win.”