What it is: A set featuring two wall diffuser refills so you can keep the scent flowing throughout your home for an uninterrupted 30 days each. Amalfi Lemon & Mint Wall Diffuser Refill Set: an exhilarating blend of zesty lemon, orange bergamot, fresh mint and a hint of driftwood. Ocean Mist & Sea Salt Wall Diffuser Refill Set: a refreshing essence of a gentle ocean mist, with hints of sea salt, white tea and coconut. How to use: Simply insert one