I would hope it could be done out of the sight of customers, if that were the policy.
I once worked at a Walgreens for the summer break from my teaching job. We had to wear smocks. The first time I wanted to take it home to wash it, I was stopped by the Pharmistist so he could check the pockets to see if I was stealing something. I couldn't believe it. I wanted to quit on the spot. I didn't, but was very upset to think I was being accused of the possibility of stealing from the store.