I am hoping to use washable wipes for wee's only initially due to DD being 2 and renowned for yucky poos. I do not want to keep wipes stored in a box with solution in, rather use a spray bottle, and store wipes dry and use as needed. What would you recommend to put in the spray bottle? I am thinking a weak solution of baby bath wash, but that would require rinsing? I could use just water, but that is a bit dull 