My greenhouse just had a dirt floor and when I watered the plants, it would turn to mud. I put these together on the floor of the greenhouse by just snapping them together. There is enough flexibility in these tile that they conformed to the divots in the dirt. Now when I water my plants, I don’t get muddy and there’s enough cushion that I can stand on them for hours. One thing, though, since my greenhouse is on dirt and these tiles are laying on top of that dirt, weeds tend to grow up through the grid pattern of the tile. My solution was to move all the plants to upper shelves and spray roundup over the weeds and the tiles. It seems to be working.
Cindy L. 
