As the title says. Elementals and Dragon Girls leave trash all over the place, whether they are captive in bondage furtniture of roam free as serveants/guests. Characters with High Profile modifier leave bear traps all over, although this only happens if they are roaming. The former is an unpleasant sight and a fire hazard (for example, Poison Dragon Girl leaves vines, Fire Elemental sets them on fire), the later causes severe lag somehow, I suspect the bear traps might force pathfinding recalculations for every serveant around. 

NPC characters, whether they are captive enemies or free roaming guests or serveants, should not litter in the Summit. 

I second this. Its really damn annoying to have happen in the one place thats supposed to be safe.

Step 1: equip riding crop.
Step 2: enable attacking everyone in menus in bottom right corner.
Step 3: apply disciplinary sanctions for littering liberally.

I believe people tossed into latex encoating machine have their High Profile modifiers disabled, while encased.
Needs metric ton of clicking to boot though...