Do these mats tend to shed pieces of rubber?

Our 3/4" Extreme Mats will not flake pieces of rubber. With all of our rubber products, you will see some rubber material that will flake off. This is just debris from the manufacturing process and doesn't mean that the flooring is breaking down. This material would just need to be swept or vacuumed up. If, for some reason, you did have excess flaking of your rubber flooring even after doing your initial cleaning, please reach out to one of our Flooring Heroes via phone, chat, or email so they can further troubleshoot the situation.