You can get rid of crickets by creating a natural cricket bait from molasses and water.
Take a bowl and fill the bowl halfway with water and then add a few spoonfuls of molasses to the water in the bowl.
Stir the contents up to mix it and then place the bowl where the crickets are. Crickets love and are attracted to molasses and when the crickets smell molasses the crickets will jump right into the bowl.
You can also set out glue traps that will trap the crickets without being toxic.