Dissolves it all
My old cat decided to use our unfinished basement as her own personal litter box last winter.  I didn't discover this until the spring after all of the messes had solidified and stuck fast to our concrete floor.  I tried putting damp paper towels over the messes but they didn't  lift up.  I read that a cleaner with enzymes is what I needed so I found Emmy's Best on Amazon. That did it! Just spray on the mess, wait a minute and the mess lifts up.  Spray again and the rest wipes away.  I did have to use a putty knife but it took Emmy's Best to loosen it. The scent is pleasant and the only reason I didn't give 5 stars is because it has not deterred my cat from messing on the floor.  But it works so well on the aftermath I just purchased another bottle.
Rating: 4 stars