Pulguicide with soft flea ge, so we add the u . From the Latin pulica that in its evolution sounded the deaf with syncopation of the i and caedo , to hit, wound, to kill, to cut as in homicide or fratricide. Flea killer . For my land they called pennyroyal (mentha pulegium), aromatic grass that they put under the mattress. Although I believe he did not kill them, in any case he drove them away. What a time when, although there were fleas, everything was cleaner!