Hey Bigs,
I dilute it 50/50 and use a spray bottle. I let it soak for about 10 minutes and spray it off with some high pressure water. If it’s thick grease, I scrub it with a rag or brush. I have used it straight out of the bottle as well, but if you don’t get full coverage or it runs, it will streak. However, if you go back over it and scrub the area the streaks go away. I like to use it to clean my door jams and trunk gutters, spray it on a rag and wipe it off.