How to remove rusty hose from spigot?

To remove a rusty hose from a spigot, first turn off the water supply to avoid leaks. Apply penetrating oil, such as WD-40, to the rusted connection and let it sit for about 15-20 minutes to loosen the corrosion. Use a pair of channel locks or pliers to grip the hose fitting and gently twist it counterclockwise. If it remains stuck, you may need to use heat from a hairdryer or heat gun to expand the metal and aid in loosening.