[seewhere]

It is a broom that is made for concrete. It's real soft, and like I said, the surface, after brushed will not look like it has much grip. But if you talk to anyone that does concrete for a living. They will tell you that a rough brush is super grippy. You can use a regular push broom. If you do, don't push down very hard on the brush and rinse the broom after each stroke accross the box.. This is very important.....Start brushing by setting the broom down very softly on the opposite side of the box that you are standing.(you want to brush toward you, pull the broom to you then rinse and move over the width of the broom and repeat until you get to the end of the box) You will brush from side to side, not front to back. Only do this process once then let box dry. Don't forget to RINSE broom after each brush.. Otherwise, the concrete will build up on the broom and cause rounded grooves instead of sharp grooves like you need for maximum grip!! Good luck and if you have any questions, pm me and I'll do my best to help you out. We used 3000 psi concrete. It works great and will last forever.

found this in the teepad design thread..