Mighty Line 5s Authorized Personnel Only Safety Floor Tape. This repeating message tape is excellent for putting safety messages on the floor. Mighty Line floor tape is great for industrial environments, warehouses, and factories and is 30 mils thick with beveled edges. Mighty Line floor tape withstands industrial brush scrubbers, forklifts, and heavy industrial wheel traffic. Use a degreaser or denatured alcohol to clean the floors. Mighty Line deluxe floor tapes are for all your industrial, manufacturing, and organizational needs.