Write the next sentence in the following story.

How to clean a guinea pig's fleece bedding
Remove feces and food debris.
At the end of each day, remove any loose stools or food you see on the bedding. You can use a plastic scoop, a small vacuum, or a small broom and dust pan.

pick from the following.
[1]. If needed, use a rubber mallet to punch holes in the fabric a few inches over the soiled bedding. Select a proper disinfectant.;
[2]. Clean all bedding surfaces to give guinea pigs fresh, healthy food. Move any parts of the bedding.;
[3]. Give the bedding a trial run to see how comfortable it is for your guinea pig. Set a trial run daily for two weeks to see how the bedding feels.;
[4]. Pick up anything off the bedding that you can easily see. Place loose hay in a single corner.;. The answer should be
[4].