I used it for a while. Better than sand as a baby/juvi, just a bit of a pain to clean. I went to slate tile and I much prefer it. Can buy it cheap at home depot/lowes and some places will cut to size.
I found that the frequent cleaning the repticarpet required made it tatter and get shabby in a hurry. I also switched to tile and it's much easier to keep clean and is much more durable.