KEEP YOUR PET BUSY FOR HOURS - Motion Activated With Smart Programming Technology That Randomly Bounces and Rolls the Ball in a Variety of Direction and Never Repeats. WORKS BEST ON HARD SURFACES - Our Interactive Busy Ball Will Perform Better on Harder Firmer Surfaces Like Hardwood or Tile. Due to the Motorized Movements The Ball Will Have a Tougher Time Rolling On Longer Carpets and Rugs 8 HOUR BATTERY LIFE - Our Interactive Busy Ball is Rechargeable And Can Hold Up to 8 Hours of Battery Life. It Also Will Put Itself in Auto Rest Mode to Help Preserve The Battery. 100% SAFE & NON-TOXIC - Our Busy Ball is Made From Food-Grade Non-Toxic Materials Making It Completely Safe for All Dogs & Cats