Use newspaper instead of cloth or paper towels. When spring cleaning, wipe horizontally on the inside and vertically on the outside or what ever "floats your boat" so you can detect which side has the streaks!
This pattern is for knit slippers, but I can totally see using a wool sweater and cutting and serging slippers from it! Home Slippers - DIY. this is knitting, but I bet I could use this to crochet some