Someone asked about it not being easy to clean up. My daughter has a tub we use only inside with one bag each of uncooked rice, beans and salad macaroni noodles. It doesn't stick on crevices or on clothes like sand. And it vacumns right up. She has had a blast with it. I made it a couple weeks ago after seeing the same post, and it has kept her very entertained. (She is 2.5) I put a tablecloth on the floor and ask her to try to keep it on the tablecloth. Then I just pull up the edges until everything that has been spilled falls to the middle and scoop it back up into the container. It's been great. But like I said, this is for indoor use only.