You can throw it out or you can blow it out but from time to time your shop vacuum filter probably needs some maintenance. If you don’t want the expense of replacing the filter, but tend to ruin the filters by trying to clean them, maybe you should take a look at the Tornado Manufacturing F4 Filter Cleaner.
Simply place your filter in the bucket and hook a drill up to the shaft on top to spin your filters clean. Centrifugal force — yes, we know it’s not a real force, but it’s their claim not ours — cleans the filter in seconds while the five-gallon bucket contains the mess.
You’ll pay $50 for the US-made F4 Filter Cleaner. Unless you own a Shop-Vac Wet/Dry vacuum, you can use the F4 Filter Cleaner with all major brands of shop vacuum filters, but check their website before buying one to make sure. If you do own a Shop-Vac Wet/Dry vacuum you’ll need to spend another $11 for their adapter.