Ottawa police arrested 20 "johns" after a two-day prostitution sweep last week in the Lowertown, Centretown and Vanier neighbourhoods.
The work was completed April 27 and 28 resulting in six charges against one man.
The 19 other men arrested will now attend "John School", where the men are taught about the effects of prostitution in an attempt to curb their habits.
This is a diversion program done before they face any charges.
The one man not eligible for the program faces six criminal charges for communicating for the purpose of prostitution, mischief and breaches of previous forms of judiciary release.
"John" sweeps are being conducted as police continue to investigate what they believe is a pattern of violence against the city's prostitutes.
Local advocacy groups for sex workers have called on police to stop prostitution sweeps during the investigation.
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