Issue is Caused by Excessive Cache Files…

Hello guys. Today I got an email from Hostgator staying that:

1-) My hosting account has an excessive number of files and is degrading the overall server performance.

2-) From the file report it appears that this issue is caused by excessive cache files. The resolution in this case is fairly simple. You should clear the cache files either manually or through the plugin. While reviewing your wordpress site, please update the cache plugin’s settings to delete old, expired cache files.

Two questions came to mind:

How to automatically clear cache files using WSFC and
the correct settings to deleted old, expired cache files?

Any help on this?

Thanks in advance ??