No, I didn't. I just stirred the can and applied to the floor. I thought the other can was a "sealant". Yes, it's a 2 part. Supposed to mix the part b with part a, then apply.
I bought the Valspar Garage Floor coating the other day and did a small portion of my garage. Like an idiot, I didn't mix the hardener with the floor coating and now it is still very tacky after 2 days. I have a fan on it and the garage door opened (Temp right now in South Texas is 55 or so)...