The strength of our candles vary based on candle size and scentSince we use 100% all natural soy wax and no additional chemical additives to enhance the fragrance throw, our candles will fill a room without overpowering it. This means our candles will be truer-to-scent and can be enjoyed by those with allergies or asthma.We recommend the 8oz jar candles for small spacesWe recommend the 12oz & 16oz jar candles for medium to large spacesWe recommend using two or more candles on opposite sides of the room for extra large spaces, or large open floor plans