This.
If you're worried, get some of that clear plastic carpet protector and put that on the floor underneath your bike(s).
Good call, and if you're storing more than one bike, try to keep them (and bike maintenance) to one room. That way if you do get any oil/marks on the carpet, then you'll limit the damage to one section of carpet.
@pifko started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
This.
If you're worried, get some of that clear plastic carpet protector and put that on the floor underneath your bike(s).