Things NOT to use as led potting!

if you have tried to use something as potting/sealer that did not work Please post it here. That way we dont have to all find out the hard way...Click here to enlarge

1) Acrylic latex caulk.
Brand (read devil speed demon)

it looked like it was going to work at first but in less then 20 days it corroded the wires at the solder joints.