I'm with everyone above. I try not to order more than I think I can go through in a month or two. When they come in, the box gets unpacked, but I don't open the bag that the packages come in until I'm ready to use it. They then usually get a number (if I remember) and they go into a larger plastic bin or cardboard box on my packaging shelves. I watch the Dollar Store and Dollar General as they often have plastic totes pretty cheap. I've become a hoarder of plastic totes.
The number is just so I can keep track when there are multiple packages of packaging in the same bigger container. Most of the packaging I use doesn't really have an expiration date, but I like to make sure I use up whatever came in first. And if a supplier contacts me about an issue (or I have an issue), I can trace it back to the order in my system.
I don't sanitize my packaging like those mentioned above, but I also don't make lotions or other water-based products. I open the package that the container came in, take out the number of containers I need, and then close the package and place it in the tote with the remaining containers. Then I check each piece that I removed for foreign material, dust, etc. before filling.