And don't throw away those empty plastic laundry soap bottles! There is still detergent in them. So fill them with water...slowly to avoid bubbles...and then mark them as "Wash Water". When/if water is scarce you can use them as...well...wash water for laundry by hand or other things that need washing.
i have been makibg home made laundry detergent. its awesome. turned about 10-20 people who in turn turned on more. it cost abt 4 cents a load. instructions on you tube.
fels naptha bar of soap, borax and arm and hammer washing soda.
you can buy all three at ace hardware or walmart. stock up.
each batch makes 10 gallons. it good for HE washers. also good for those with sensitive skin. everyone raves about it