Felty Felt!
First, I tried running them through a normal cycle with a hot water wash and a cold water rinse, and medium spin. My washing machine is a Whirlpool and very fancy. A little too fancy maybe. Everything is digital and there are about 15 pre-set cycles, though I usually only use the normal and handwash cycles. When our old cheapo washing machine crapped out last winter, we splurged and got this front-load beauty and the matching dryer. I feel like a domestic queen! So spoiled! Anyway, the normal cycle didn't seem to do much even with the hot water wash and the dish detergent I added. So I decided to try the Sanitary cycle pre-set on my machine. This is supposed to run hot water at something like 121 degrees for the wash cycle, so I figured this would definitely be hot enough to get some kind of result.
I let the sanitary cycle wash for about 10 minutes, then stopped it and programmed a cold water rinse and spin with a medium spin. One of the sweaters had been felted slightly when I purchased it, so this one was done after this cycle. The other one looked like it could use a little more felting, so I put it in on the sanitary cycle again and managed to forget it was in there so it got about 27 minutes of super hot water before I did the rinse and spin in cold. It looked great when I took it out - just about right I think. So, I may have figured out the trick to felting in the front loader.
I plan on making some knitting needle cases and accessory pouches with my new felty material. Check back if you think you might be interested.... I will probably be glad to pass on a few to other interested people :)