Goal and options: Prevent cats from digging in trash can.
output answer: Coat outside of bin with WD-40.

Goal and options: What should I do before removing the combustion chamber door of my furnace.
output answer: Make sure the power switch is turned to off by flicking it with your fingers.

Goal and options: How do you freshen up your carpet on a budget?
output answer:
Sprinkle baking soda on the carpet, wait 30 minutes then vacuum the carpet.