For a deep clean I use a curry brush (like this one: Four Paws Magic Coat Professional Series Grooming Brushes for Dogs & Cats l Trimmers, Nail Clippers, & Brushes Dog & Cat https://a.co/d/8j7CsHi) I had bought it for my cat, but discovered it works really well at pulling crap out from carpeting.

Ridiculously photogenic unhoused man