Spread some ground cinnamon where you think the ants are coming in to the house.
Use half vanilla (has to be pure vanilla) and half water and for a mosquito and tick repellent.
Sprinkle ground cayenne pepper around the garage (inside & out), and especially near entry holes. Pests don't care for the smell of it.
Mice hate the scent of peppermint extract. Simply sprinkle *pure* peppermint extract on the items in your garage you don't want the mice in or on.
For a fresh smelling fridge, a cotton ball soaked in vanilla extract inside of it.
Lemon extract will remove scuff marks from luggage.
Place bay leaves in kitchen drawers and in flour and sugar sacks to keep crawling insects away.
Add a few drops of vanilla extract (essence) to the paint when stirring or mixing. This will remove the unpleasant smell but won't affect your color.
Flavoured mayonnaise may be made by adding crushed dried desired herbs.
To remove smells from the microwave place a drop or two of vanilla extract on the turntable - remember to wipe it off before you next use the microwave.