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FussyHomemaker wrote: I've tried ALL of the liquid products, including an aerosol one. Fiber_lok (rubber sap with some ammonia in it) was a huge disappointment: it came off like dripping mucous when I washed it in the machine, and my rugs slid even more because it dried slick. And the aerosol had no effect whatsoever!!
I love the new brush-on product simply named Rug Anchor. It's a bit expensive, but a little goes a LOT farther than the bottle claims, and it stands up to HOT machine washing and the clothes dryer. My rugs and other things I used it on a couple of years ago are joys now.
By the way, the product's available online only, and the company has discounts on multiple bottles, so you can split an order and save $.