DeoxIT D100L-25C Precision Needle Applicator, More Than A Contact Cleaner, 25 mL, Pack of 1

i saw some one on youtube use this to clean their game cart and also put some in a pot for a 2600 paddle.so i got some and boy does it work well! especially for cleaning the contacts on a virual boy for the displays after solder fixing them. i also tried it out in the volume knob and and its as smooth as silk after applying when turning it and the sound is no longer crackly. it works way better than wd-40! all though the price is high i will be using this sparingly. one thing i really like it the fact that it absorbs in to tiny cracks making it easier to oil a pot.If you work on old electrics this is a must!