Formula now more environmentally friendly per new FDA regulations! These effervescent cleaning tablets are safe for cleaning clear Essix retainers and clear Invisalign orthodontic aligners, plastic and wire Hawley retainers and appliances, mouthguards, nightguards, bruxism appliances, Valplast Partials, and TMJ splints. It is a great cleaner that gets rid of odors, dissolves light plaque buildup, and prevents new plaque buildup! It keeps your retainer bright and shiny. You are left with clean, fresh-smelling...