I use a couple brushes I bought when I worked in a detail shop. They are small wood handled tooth brushes with horse hair for bristles. You really got to watch what type of brush and how you use them cause you will get the wax out but you leave very fine scratches behind! If you guys have any automotive paint stores or detail supply stores you can find these brushes! The horse hair makes a big difference

 

Peanut butter is the BOMB for this sort of thing! Rips the wax off.

JIF creamy alllll the way!

 

Some guy at a car show gave me a toothbrucsh when i was waxing to get it out of the cracks and i use a toothbruch everytime i wax now!!