same as figi says goes for your washing machine also.
don't use bleach though. put some old towel or rags with half your washing detergent, through on the hottest wash you can once a month or so to clean all the gunk and cr*p that low temp washes leave as residue in pipes etc. ( don't put good stuff in the machine , use old rags!!! i know this is repeated but some times it needs to be )