Silicone spray is a colour less, odorless, heat stable and non toxic product making it safe lubricating household objects and surfaces (against rust and erosion). It is used within the industry for lubrication, waterproofing, preventing dirt build up and adhesive prevention.
It is especially good on porous iteams such as locks and hinges. The benefit of it being a spray opposed to an oil is that it can provide an even coverage in areas which are difficult to reach.
It is quick drying and no mess.