I'm new to the cloth diapering world, and I was wondering what laundry detergent do ya'll use? I'm looking for the most inexpensive option, but at the same time I don't want to ruin my diapers or have repelling problems. I'm using bum genius freetimes, and I know their website says not to use just any old detergent. How much truth is there to that? Oh and I don't have a HE washer, so that's not a factor. Thanks in advance!