Birds don't like new "Birdblox" anti-nesting and anti-perching strips which simply snap onto the top of 2-in. boards or rafters.

There are two types of Birdblox -- a saw tooth version used on open trusses and a flat version designed to keep birds from resting between the top of a truss and the roof.

Both products are made from poly and sell in 5-ft. lengths that simply snap into place on top of any 2 by 4 or 2 by 6 board.

"As far as we know they're the first bird deterrents made specifically for pole sheds. They're also much more environmentally safe than other products on the market - no poisons, glues or other chemicals are needed," says Schlichting.