Answer:
My first is an insect; my second is a border; my whole puts the face in a tuneful disorder.
You can tumble in it, roll in it, burn it, animal eat it. Used to cover floors, still used beyond stall doors. Freshens whatever it is placed on. Absorbs whatever is poured into it.
It is the great nemesis of the lactose intolerant.
Hands she has but does not hold. Teeth she has but does not bite. Feet she has but they are cold. Eyes she has but without sight.
Though blind as well, can lead the blind well.
People take me on walks and I run and have fun. What am I?