And they're working -- but not just on the birds.
The Corps of Engineers is trying to scare seagulls away from Oregon's Dalles Dam.
But the booms are also making neighbors jumpy and pets, too.
The corps fires screaming and exploding rockets to drive away the gulls.
The tactic has been used for the past six years.
But folks in the area tell a local TV station the blasts are louder than ever.