Have to say the melissa and bog myrtle one lasts at least as long as the toxic ones, so might be worth a shot.
Simple to make too.
Buy a Bounty kitchen roll (has to be this one or similar, so it doesn't fall apart when it's wet) and cut it in half to make two toilet roll sized rolls.
Find a tub that will fit (old ordinary baby wipes, pull out from the top is ideal) and carefully remove the cardboard central from the halved roll and put the roll into the tub.
Big handful of lemon balm (melissa officinallis) and a good handful of bog myrtle leaves (myrica gale) into a pot. Pour over a couple of mugfuls of boiling water, put on a low heat and cover the pot with a good lid. The idea is to kind of sweat down the leaves to make a strong liquor. After ten minutes turn off the heat and leave the pot to cool. Strain half of the liquid into the centre of the tub with the kitchen roll and allow the paper to absorb all the liquid. Close the lid and just use like baby wipes
The rest of the liquid can be used for the other half of the kitchen towel. It stores well in a polybag, doesn't seem to go off, smells really good, and in all the years I've used it (over thirty, we used to soak flannels before the advent of baby wipes and bounty kitchen towels) I haven't known anyone to have a reaction to the stuff. It works gently, doesn't stain baby or clothing and it's pleasant to use.
cheers,
M