My bed bug problem seems to be contained now. (Dare I hope eliminated? Only time will tell. No bites or bug sightings in the bedroom for two weeks and only one bite a week ago on my couch- which has since been retreated.) As this product uses essential oils, you should expect it to be two things: oily and strong smelling. However, neither of these things were really a problem, nor would they keep me from using it again. The smell is not necessarily unpleasant, but it is strong enough to be bothersome initially if the area is not well ventilated. After treatment, the scent does hang around -somewhat like if you left a scented candle or a plug-in room scent going all the time. I used this product along my baseboards, on the feet of my bed, and to treat the mattress inside my couch. On the rest of the couch I used steam as I wanted to somewhat mitigate the smell. This product will leave an oily residue along the baseboards/floor wherever it is sprayed. This is how the product continues to work, so it's not a problem, but be aware that oil on wood floors is slippery, so keep it as close to the baseboards as possible. I did use it once on the area rug and it did not have any negative effect on it, nor was the residue noticeable there when sprayed lightly as directed and given time to dry. I found this product useful as one of the tools in my arsenal against bed bugs. Remember, no one product will be your silver bullet, and there is no substitute for thorough inspection, cleaning, vacuuming, washing/drying, and bagging (of treated items only unless you plan on waiting 18 months!). I plan to continue treating my baseboards to help prevent re-infestation from neighboring apartments (whose tenants I can only hope are working as hard as I am to eliminate this problem).