"Four of my windows treated so far, with the Pro version. Two more to go. One gets used to the dots that are only really visible from the inside in certain light conditions. Lost too many birds and hawks since moving into those house three years ago. I think the dots look quite cool."

Michael M.

"The results are almost miraculous.""

David Willard

"To anyone who is thinking about it but hesitating- the markers are incredibly effective. Save yourself the heartbreak of finding birds killed by window strikes on your deck etc. I would, in retrospect, never get glass panelled decking again however installing the markers does seem to make glass visible to birds"

Mary J.