lol

When I had a normal vacuum, I emptied the (reusable) bag every time I used it... With the paper bags, usually when it was half full.

You just go to Godfrey's and tell them the make and model of your vac and they will give you the right bags.

But yes, you should prolly change it! lol Maybe see if they have a reusable bag that will fit your cleaner, then you won't have to buy any more ever