I use an old sprayer from a bottle of uh...scrubbing bubbles I think it was. Spray into an old soda aka pop bottle, cap and save for unsuspecting newbies that visit. (Or ya get Jim good and drunk and put it into a bottle that looks like Wren might use for beer
Some use a syringe and tubing... it'* all a matter of what works best for you. I had a nearly empty bottle with a sprayer hanging around.