Yep, Smartish cases can and should be cleaned. Including personalized printed cases. Fortunately, it's quick and easy. Here's how to up your case cleanliness game:
First, read Wirecutter’s guide to disinfecting your phone.
Next, clean your Smartish case by using disinfectant wipes or 70 percent isopropyl alcohol wipes. These solutions will clean the case without damaging it.
Stay Smartish (and clean), y'all.