So easy my 3 yo helped. We rent and have a large dirt area right off the back porch. Bought these to lay on top to make the space usable. The area took 18 boxes and took me maybe 2.5 hours to lay them all. It was beyond easy and super quick. No major defects in any of the tiles, all snaps and locks worked. It couldn’t have been better. They look great and do the trick perfectly! So excited to finally have a usable patio area!