Something was poured or sprayed on our lawn.

West Wildwood - Something was poured or sprayed on our lawn. It's killing everything in its 4-6 feet wide by 80-foot long path. You can clearly see the outline. We called the borough to ask who to speak to or what to do. They sent a police officer who wanted to know if we wanted to sign a complaint! We called the state, county and federal offices of health up to the EPA. The responses? Shuffled from one to another then "if you can't tell us who dumped it or what it is, we can't help you." Have found two dead sparrows, shrubs and flower beds are dying and no help.