[Perfectlap]

basically you should never wax your car if it needs claying.
Use soapy water like or specific clay lubricant and wash after claying and before waxing.
I never wax or polish without a quick clay first.
keep a bowl of soapy water to clean off the clay and fold frequently so that you are alway working with a clean side of clay.
I don't believe in this folding the clay without first cleaning it thoruoghly to remove sediments and debris.
Don't reuse clay its asking for trouble.