Do you do one at a time or can you wash 2 or 3 together at a time?

I only wash one at a time but why not 2 ????

I'll do 3-4 at a time... no problems

Thanks guys. This is all good info.

I rotate four. The used ones I turn inside out and give a good rinse (have a laundry sink and garden hose in the fish room). Until I wash the three (1/4 cup bleach in the washing machine w/extra rinse) I just keep them moist in a pail.