I just sold 4 rakes to my local Dillard’s retail store.
I don’t shop at Dillard’s, so I can’t tell you if all the stores have the same carpet. The local one has the high grade soft commercial the is a
“Thread Magnet”. Every fiber sticks to it, and won’t vacuum out.
They bought the rakes to pre-rake the dressing rooms before vacuuming.
I checked in with them 10 days later, and the process has worked well for them.
This may be a good opportunity for you to sell some large rakes.