First encountered shit beetles on a 2007 Grand trip - eventually we were giving them names and seeing if they'd still be around at the next camp.
Couple years ago my party was on the Snake through Hells Canyon while another group of friends ran the Lower Salmon.
We shared a joint last night's camp at Cottonwood Creek.
Their Johnny Partner was crawling with the beetles while my Riverbank was devoid of them.
Difference in practice:
Them - used Groover TamerRTB 780
Us - RTB-780 microbes plus charcoal ash*
*Charcoal ash - I save the clean ash from the DO cooking in a jar a and keep with the groover.
Following each deposit, sprinkle with a light dusting of ash.
Besides the lack of beetles, I've found this to also keep regular flies from congregating.
I think I got the idea from Brady originally.
I've been keeping an eye out for a cheap cremation urn to add the right touch to the holy grotto.