I have blow guns just about everywhere I need to use one but the one that gets the most use is one I made.
I took an air compressor quick-connect male plug and a female plug, and screwed them together.
I get a lot more air out of it than any blowgun I have ever used.
My compressor makes about 15 psi, but it can't quite keep up. But with that high volume, the mess is cleaned up much faster.
I call it my pneumatic broom.