Backflow incense might take 30-40 seconds to start, After it creates an illusion of a smokey waterfall Video for reference purpose only Package contents: - 1 Backflow Incense Holder with 5 Scented Backflow Cone Incenses Simply place an incense cone at the top of the waterfall and with the cone's special properties, the smoke starts to flow in reverse direction, that is from top to bottom and in-turn creates a beautiful smokey waterfall; festive occasions - like diwali , raksha bandhan , grah pravesh and corporate gifts Can be used in Living room, bedroom, study, office, meditation room, yoga room, hotel, library,etc. Need to use backflow incense cone, burning incense cone placed in the incense holders hole, there will be beautiful results. Simply place an incense cone at the top, the smoke starts to flow in reverse direction, that is from top to bottom, and in-turn creates a beautiful smokey waterfall Can be used as a present for your friends, business partner or family members Gentle wash, use dry/wet cotton cloth to remove dirt.