they stick dry clean only labels on anything just so there's no liability from the manufacturer- I've seen these from M&S, just treat them as normal rugs.
Vac both sides, use a wool safe solution and clean as normal, obviously a colour test if required.If you really want to be the professional take them away to your inplant facility (your garage) and do them without prying eyes take back DRY.
Shaun
PS obviously this would cost slightly more