Originally Posted by tlp
Actually you never want to make contact with car using anything because when you do it you can potentially introduce swirls. Wipe / Dab whatever just use common sense when removing the contaminants because anything that comes between your cloth and the paint surface is a scratching agent.
Common sense would be not wiping..the bird bomb itself has tiny pebbles and sediments from what the birds eat..
If you use clean MF rags on a clean car you will never introduce swirling...another step is constantly looking at your MF rag for contaminants..