Write the next sentence in the following story.

How to give a gerbil a sand bath
Purchase a small dish to use as a " gerbil bathtub.
" you could buy a small dish, such as a cat dish, at your local pet store or online. This will serve as your " gerbil bathtub.
" find a dish or a bowl that has a relatively flat base, since your gerbil will be rolling around in it. It could be a plastic, ceramic or a metal dish.