I get an error frequently for choosing an inactive product. I’ve gone to my product list and I cannot find the inactive products. How do I remove the inactive products?

It seems like every one of my products are duplicated. When I am choosing a product from a product list there are always 2 identical choices, one works and the other appears to be inactive. But I can’t tell the difference – they look identical on the list. I just have to try one and see if I get an error. The error says “Something you’re trying to use has been made inactive. Check the fields with accounts, customers, items, vendors or employees.” I’ve gone to my product list and I cannot find the inactive products.