I put a small quantity of WD-40 Specialist White Lithium Grease in a small plastic container and snapped it shut airtight. A PET container similar to but smaller than a 35 mm film container. I filled the container halfway and snapped the lid shut. Two hours later I heard what sounded like an air rifle being fired and I found the container open and its contents splattered over my workbench. Now you know how to build timed booby traps with WD-40 White Lithium lubricant.