Since it’s not exactly idyllic to shower right alongside mold, grime, and other gnarly stuff that’s built up on your liner, it’s so smart to switch it out as needed. To find out what subscription will be best for you, you’ll head to the website to take a quiz. After I answered questions about topics like how often I use my shower and the ventilation level in my bathroom, I discovered that I should be swapping in a new liner every six months. The website recommended that I purchase The Shower Liner System + Hooks subscription, priced at $75 and sent semi-annually. I also had the option to buy without hooks ($55), and both choices are available as single purchases if you prefer not to commit to the subscription.