I admit that it took me about 3 months to start laying the tiles, but when I did, (on a scrubbed clean floor, BTW) everything BUT the edges adhered to the floor. I even used a brayer to get as much stick as possible, then taped every seam down in the hopes that over time they'd stick... they didn't. I have to pull up every tile I laid and apply glue to all four edges. Not happy.