MINNEAPOLIS, Sept. 28 — Dividers intended to make soliciting sex much more difficult will be added to stalls in two men’s rooms at the Minneapolis-St. Paul International Airport.

The metal dividers will fall two or three inches above the floor, an airport spokesman, Patrick Hogan, said Friday. Stall partitions are now a foot off the floor.

The two restrooms include the one where Senator Larry E. Craig, Republican of Idaho, was arrested in a sex sting in June. Those two sites have elicited the most complaints regarding sexual activity, Mr. Hogan said.

It will cost about $25,000 to buy and install the dividers, he said, calling that “a drop in the bucket” compared with the expense of prosecuting Mr. Craig on a disorderly conduct charge and handling the 40 arrests made in sexual solicitation cases since May.