Is the higher tack level of a peel off mat an advantage?
Contamination on your feet and the wheels of trolleys is in layers and of varying sizes requiring multiple steps (at least 3 on a tack surface for 100% removal. Thus, as long as the tack level of the mat is greater than the donor (foot) the contamination touching the surface is removed. Very high tack surfaces are often avoided because they are uncomfortable and pull off over-shoes.