Hi Henry,
I saw a lady placing these traps yesterday. They are about 18" tall by 8" wide, and about 10' off the ground. There are 2 of them near the corner of Pilon Rd and Bessete Rd in North Fairfax. They both have the explaination signage at ground level.
JoAnne
(http://www.vtgrandpa.com/photos/albums/icestorm_080309/0244_G.sized.jpg)
(http://www.vtgrandpa.com/photos/albums/icestorm_080309/025_G_001.sized.jpg)