The "sawdust game," was a confidence scam that only swindled those who deserved to be swindled.
The term “bunco” has come to mean to any type of swindle, but in the 19th century it usually referred to a confidence game involving crooked gambling.
The Audacity of a Professional Thief.

The discovery that public school children frequent immoral places creates a startling sensation in Columbus, O.
From the startling developments which have been in process of unfolding for the last few days at Columbus, O., says the Journal of that town, and which reached a culmination yesterday, it would seem that the well disposed missionaries have found a fruitful field at home. Conscientious Christian ladies have been stricken with horror in the past few days when they were told that public school pupils—boys and girls—had been for several weeks previous engaged in the pastime of visiting a resort on Town street which sails under the front name of saloon and restaurant, but has rear establishments with stalls and booths and all the paraphernalia which go to make up and improvised place of assignation, where drinking and intoxication may be imagined as among the milder crimes indulged in.
Reprinted from National Police Gazette, December 22, 1888.

