Hi Kevin
It depends on how soiled the safety floor is, generally you can deep clean 30 to 40m2 with a microcleaning floor pad before it gets saturated, you can either take it off and rinse it out under a tap and then use it again, or just allow extra cost on the job and use as many as required to do the job, if you use say 10 on a job take them back to the workshop clean them out and use them again, just to note Kevin microcleaning pads will wear out easily on safety floors but for deep cleaning them i have found these pads to be the most effective way.