2X Sanitizing Strength: one squirt of PURELL Advanced Sanitizer Gel equals two squirts of other national brands. AT-A-GLANCE™ refills - Monitor product level with just one look. SANITARY SEALED™ PET refill is easily recycled. "Energy-on-the-refill" technology, every refill has a built-in energy source, designed to last as long as the refill.