Multiple in-game objects can be used to force sims to take their shoes off when indoors, or even wear slippers.
It's a great tool for adding a bit of immersion to gameplay but it has a jarring flaw: the animation, or lack thereof. Sims simply freeze whenever they walk through doors and a small swirling effect plays around their feet.
This mod retains the swirling effect, but allows sims to continue walking uninterrupted, making the feature a lot less annoying to use.
Before
After
