Rubber mulch does not require any type of special removal process. Simply use a shovel, excavator or backhoe to scoop the mulch. Place old rubber mulch into receptacles.
Because Rainbow Mulch is made up of 100% naturally-derived ingredients (and absolutely no tire or wire), the mulch can be recycled instead of discarded in a landfill. Contact your local recycling center to assess if they handle rubber and how to recycle it at their facility.