quite a lot of scrubs don't need shower facilities, but I personally would avoid a salt based scrub as they are a nightmare to remove every last bit.
I use gerard's gommage cream which is really lovely and easy to remove with steamed mitts.
I've also started using Priadara oriental polish (from ellisons) and that is really easy to remove and I quite impressed with it, but the oriental scrub from the same range is hard to remove.
another tip is to remove the scrub/peel/polish with a dry skin brush or exfoliating mitts.
another favourite of mine is the seaweed scrub cream from H.O.F. It goes on as a scrub but if you allow it to dry it comes off as a peel.