There was an awesome new $1/1 Black Flag Product Coupon in the 5/15 Newspaper Insert. Walmart sells several Black Flag Products for just $0.98 each making them FREE after this coupon.

Black Flag Fly Swatter, $0.98
$1/1 Black Flag Product, exp. 6/15/11 (RP 5/15/11)
FREE after Coupon!

Black Flag Fly Paper, $0.98
$1/1 Black Flag Product, exp. 6/15/11 (RP 5/15/11)
FREE after Coupon!

My store had these with the normal Bug Killers by the Cleaning Section, but they also had an entire Display in the center aisle so there should be plenty of stock at most stores.