GRANTS PASS, Ore. (AP) — A group of people whose families, homes and pets came under a cloud of herbicides meant for neighboring timberlands is challenging the constitutionality of the Oregon Right to Farm and Forest Act.

The lawsuit filed Wednesday in Curry County Circuit Court in Gold Beach argues that immunity the law grants to pesticide sprayers treating farms and forests violates the Oregon Constitution’s guarantee of the right to seek a legal remedy to violations of property rights.