In accordance therewith the present invention is directed to a bioresistant surfactant which comprises a soap derived from a carboxylic acid compound having from 10 to 30 carbon atoms of the formula: ##STR1## wherein R1 is hydrogen or an alkyl group; R2 is hydrogen or an alkyl group; and R3 is an alkyl group, provided that the number of carbon atoms of R1 plus R2 plus R3 is from 8 to 28 and that w