In the pictures enclosed is shown clearly the strong action and power of attraction of the decontaminating mat on rolling casters.

Pic 1: after 3 full rotations within the first 30cm., casters (diam 8-9cm) are cleaned at 90%. Pic 2: at the end of the mat, 280cm, no residues are visible non both casters and mat Pic 3: casters left is clean. Pic 4: the comparison of left wheel (rolled onto the mat) and right wheel rolled on floor shows the big difference in cleanliness.

Generally 3 full wheels rotation are needed to clean away 90% of dirt, powder and particles. Weight and pression on the mat does the rest.