Earlier this summer I installed one coat of polyurea from Garage Flooring LLC on my existing slab in good condition. A good detergent scrubbing, light acid etch and no primer. Quick, easy and coverage was as advertised. Looks absolutely great. Couldn't be happier. Stay away from the cheap box...
For concrete, kitty litter/oil dry and many other materials are too course. You need something really fine, like ash.
I've been using ash with success for years. I even keep a jar of ash from the wood stove in the garage, ready for any spills. It is extremely fine and absorbent.
Mudding and taping drywall in the new garage. I've done drywall work before but now I'm learning to do it at 90 degrees/10% RH. Really have to move fast.
Really pushing to get this work done as my workshop/tools have been packed away since I moved. Now that I've relocated I need to get back...