Stop an angry, charging bear with this amazingly effective deterrent. UDAP Bear Spray has been proven effective in dozens of bear attacks. During a bow-hunt over a decade ago, Mark Matheny was attacked by a grizzly bear and suffered numerous bite lacerations in the head and neck. Mark's wounds would have been much worse, if not fatal, had it not been for a burst from a pepper spray that ended the attack. Mark's experience changed his life. Since then, he has dedicated himself to improving a product designed to safeguard people against maulings, and to help them coexist with wildlife.