Stop-a-Ladder ladder stopper
Stop-a-Ladder keeps your extension ladder from sliding out from underneath you on slippery surfaces such as synthetic decking or polished concrete. It even works on wet surfaces. This ladder safety accessory is made of aluminum with a foam rubber bottom that acts like little suction cups. It comes with a strap to attach the unit to the bottom step for easy mobility and a carry box to help keep the foam bottom in good condition. It also helps protect hard wood floors from damage from ladder feet! see http://www.ergokneel.com for more info or call 1-888-456-3372