What kind of yarn can Snuggles be made with?
Ideally, acrylic or cotton is the easiest for shelters to clean.
Wool has a tendency to shrink in the hot water washings and can begin to felt in odd ways. Also, wool can maintain odors and grime which gives them a very limited usage life. What we have found is that if you combine wool with another strand of acrylic the end result is much better and more usable.
You can also use fabric strips to make Snuggles. These make a strong mat which is useful in the concrete kennels.