I tried Glade candles for the first time a few years ago and was very impressed with them. Using just one will scent up a small house for hours. They burn down to nothing (no leftover wax) and will burn for hours. I keep them on my stove for safety reasons, as I have forgotten that they were burning and went to bed with them still going. The little glass containers they come in are decorative and can be reused and they come in a wide variety of scents.
My daughter is partial to the strawberries and cream and I am more likely to get the Autumn scents. There is nothing like walking into your home, on a crisp Autumn day, to the scent of home made pies that are NOT cooking.
Even when they are not burning, their scent drifts quite a distance from where they sit. Just leaving a few unlit around the house (the same scent) while you go to work will give a refreshing fragrance after being in the closed house all day. I will use these for years to come. They are also inexpensive compared to some.