Depending on the project, I sometimes dip and sometimes I spray. When I have a pattern with a lot of bias edges, I wash the fabric, and, when the wash cycle is done, I dip the wet fabric in a 50/50 mix of sta flo and water. I wring it out pretty well, flatten it out and throw it in the dryer for a bit, then iron when it's still damp. Really helps keep those bias edges in shape.