Wave 3D is the #1 selling 30-day urinal screen. It contains 3 to 5 times more fragrance than competitors. The patented two-sided design eliminates 97% of urine splash on both sides for error-free installation. Crafted for convenience, simply place the Wave 3D over the drain in the urinal and you're done. Each screen has date tabs for replacement reminders and contains beneficial bacteria that consume odors and keep drains clean, clear, and smelling fresh.