Dental Kong toys have unique grooves that perform a gentle "squeegee" action on teeth & gums when chewed. Kong Stuff'n paste or dog toothpaste (sold separately) can be used inside the grooves if desired. Kong's exclusive red natural rubber is puncture resistant super bouncy & chewer friendly. It is unmatched for resilience durability & bounce. Kong satisfies a dog's natural need to chew--the thick flexible walls keep springing back for more! The small & medium sizes feature an exclusive diamond braid cotton floss rope which effectively removes food debris reducing plaque & tartar build up. Made in the USA.