ICYMI: The Bongfather's Greatest Invention Yet - (fritted disc) 2016 video
It's so hard to keep up with all the inventions and technology these days !
Sadly, I'm always playing catchup lol.
Somehow I've missed learning about this innovation, and from the comments in the video, looks like it's worth the extra maintenance for the reduced lung impact... (suggestions include using an "ash catcher," and warm isopropyl alcohol, "rezblock," etc). And it isn't cheap from what I read...
I'm definitely going to pursue acquiring one myself, just because I'd like anything that reduces the negative side of herb burning.
And I gotta say, it's pretty damn cool someone was able to patent a bong, hahaha !!
Cool story too 
Note: This video isn't an advertisement per se ( "rooster apparatus" ), it's about the inventor and his creation.