Pet Gear Easy Step II Pet Stairs, 2 Step for Cats Dogs up to 150 Pounds, Portable, Removable Washable Carpet Tread wireless dog fence Lamb is also a great Lamb is also a great alternative for dogs that need a high quality protein source but may be allergic or simply intolerant of other commonly used protein sources Packing Detail 1 x Indoor wall mounted Transmitter 1 x Rechargeable & Waterproof Collar Receiver 1 x Adjustable TPU Collar 1 x AC Adaptor 1 x Boundary Wire of 300 Meters 1 x Test Light Tool 2 x Metal Probes (short + long) 2 x Screws set 20 x Boundary Training Flags 1 x User The carpet tread removes easily and is machine washable The stair easily snaps together (no tools required)