I retired my Hoppes #9 except to sniff it once in a while.
I love the smell of Hoppes #9 in the morning.

Been using a Bore Tech product called Bore Tech Eliminator in my pistol barrels.
I think it's better than #9

They do have a Shotgun cleaning product but I have not tried it.
https://www.midwayusa.com/product/1014656799
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NO STEP ON SNEK