Coming into the slow season when there is no activity, our place can have a not so pleasant smell when ou first enter. With all windows and doors closed for weeks at a time and out and the cleaning detergents used by the cleaner can be pretty strong at times, this can give guest a false feeling that the place is not clean and not very welcoming.
I thought of buying a whole house oil diffuser system to install to the HVAC like the hotels but it's expensive and another maintenance item. Was wondering what's everyone's secret?