What tactics do the police use to enlist the help of the citizens of Elm Terrace in locating Montag?

From the text:

"Police suggest entire population in the Elm Terrace area do as follows: Everyone in every house in every street open a front or rear door or look from the windows. The fugitive cannot escape if everyone in the next minute looks from his house. Ready! " Of course! Why hadn't they done it before! Why, in all the years, hadn't this game been tried! Everyone up, everyone out! He couldn't be missed! The only man running alone in the night city, the only man proving his legs!"