Dust-Off
Big cans and cases
Professional Duster, 12 oz 6-pack
★★★★☆4.5 from 654 ratings
$47.99$0.67 an ounce of gas
A pack of six large cans fits the shelf above a workshop or an office row where several towers gather dust simultaneously.
On the shelf
Big cans and cases
Cans at 12 and 17 oz, sold in sixes and twelves, for a shop, a lab or a supply closet that goes through them.
A longer run per can
A 17 oz can holds most of a working day of intermittent use. Fewer swaps in the middle of a job, and fewer empties on the bench at the end of it.
Cases, not shopping trips
These sizes come by the six and by the twelve because the places that use them do not want to think about the supply again for a while. A case in a cabinet is one decision instead of a dozen.
Built for open grilles
Wide intakes, heat sink fins and fan cages take more gas than a keyboard does. There is real dust in a tower that has been running for a year, and a bigger can is what gets through it without stopping to warm up.
Who these are for
School labs, repair benches, print shops, camera rental counters, anywhere somebody is responsible for a room full of machines rather than one machine. That is a different rhythm from home cleaning, and it is what these sizes answer.
The tell is simple. If you have ever gone to grab a can and found it empty in the middle of something, you are the person the case is for.
How to store a case
Keep the case somewhere cool and out of the sun, standing upright, and take the cans off the top rather than pulling from the middle. A can that has been sitting in a hot cab or a sunny window works differently from one that has been on a closet shelf.
Cans do not go stale on a shelf. A case bought in spring and half used by autumn is normal, and the last can out sprays like the first one did.