Buy from Amazon.com : https://www.amazon.com/gp/product/B002KZXS5W?tag=azmira0d-20
Clean Room Sticky Mats 36 x 45 4 Pads 30 Sheets per Pad
Product Description :
Keep sanitary-sensitive areas free and clear of foreign substances
Remove and trap unwanted dirt dust and debris from shoes
Help improve indoor air quality
Sticky mats act as a barricade for sterile environments
Tacky polyethylene surface 18 thick