[jeffrey]

You can use whatever you feel most comfortable with. While I said rags, they really don't need to be rags. You can use anything that will clean up a mess then can be rinsed and reused.

We actually use small hand towels as our "clean up rags." Whatever you have can work or if you want them to look nice, head to garage sales. We picked up 20 nearly new hand towels for $2 that we still use 3 years later.

Since T-shirts don't soak as well as towel and wash cloth type material, they probably wouldn't work as well.

We simply throw the towel into the weekly wash with jeans and other heavy material items to keep them clean and resuse them. They are small enough that there is never a need to do an extra laod for them.

The one thing we don't use them on is grease. Grease spills get soaked up with something that we're willing to through away.