(Springfield, IL)  --  Sangamon County farmers say they are concerned about the return of a certain pest that is eating their soybeans.  The Japanese beetles came mostly in the Morgan County area in mid June.  The ravenous insects aren't affecting Sangamon County as much because the cold winter froze the ground, which resulted in the killing of the beetle's larva.  Experts say the best way to do away with the Japanese beetles is to remove them from the plants and put them in soapy water or rubbing alcohol.