X2 on pressure washing. It did wonders on my 20 plus year old carpet.

 

I cut my rear fenders and in so doing cut the pinch welds, did some work this week on the cargo area and the carpet was drenched. Pulled the carpet, let it dry, caulked the pinch welds and hope it stops the leak. Think i'll order new carpet front and rear, I know Rhino Liner is durable but its fugly and loud