Its cheap, its at your local megamart or grocery or ace hardware.
Its not going to mess up your suit.
No sun, no hot water, no washing machines. Take your suit off, rinse it out with cold water, hang to dry over something like your shower rod, or in your garage - somewhere cool, with no sun. Heat will bake the rubber till it loses its stretch and falls apart - therefore you wanna keep it cool dark and dry until you put it on and wear it, once done you want to take it off, rinse it and hang to dry.
Finally when it smells funky get a bucket or use your wash sink full of cool water with a bit of woolite and swish the suit around by hand, then rinse completely and hang to dry.