My 7 month old puppy loves the peanut butter one. She can chew on these for a while. She tends to get aggravated because they are so hard and sometimes slip from her paws. All in all I believe she enjoys these a bunch.
These are awesome! Just cleaning the walls of little finger prints alone, totally worth the purchase. I also like to use them to clean my interior doors. Gets all the kick marks and scuffs of the doors. Awesome stuff!