I love these products. They stay good for weeks/months. I open mine only a crack at a bit and then dont open it more till it has begun to shrink or stop working. I love the smell as it is almost like a candle that eliminates all other odours.
I usually go for berries fragance freshener because I love the smell, soft but still makes a good ambience. This brand in specific is my favorite because of its price and long lasting would definitely recommend