The real life pro tip, in the replies as always

Ah, thank you I missed that :)

Ugh, if only that worked for longer than like a month.

Eventually all these materials you can throw under throw rugs to make them stickier end up failing. Catastrophically.

Make sure to get a throw rug that has the non-slip feature sewn in. Make sure it's nice and heavy too and never put it in the dryer (it'll ruin the non-slip part). You should probably air dry throw rugs anyway, actually 🤷