Ladder Aide has non-slip rubber pads on the bottom of the stabilizer and the platform to keep it from moving, and 1/4″ lips on the platform keep the ladder’s feet securely in position. One test for safety involved loading weight onto a ladder on the Ladder-Aide, then applying 50 lbs of lateral pressure to the Ladder-Aide, pulling it from the side. A “pass” would be less than 1 inch of movement. It doesn’t budge at all.