There are many companies making products that are anti-slip sealers. Kills two birds in one stone. Sometimes you can find a decent product at the big box stores. I would recommend calling your local janitorial supply warehouse. They can sell you an industrial or commercial product that will work better and last longer.
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Personally, I would buy the slip resistant stick-ons. If you don't mind how your concrete floor looks with slip resistant pads on them. The other option is buying slip resistant shoes. Good luck and don't think too much about it.