Hallowell business owner Adam Patterson said he put up this sign and another one on his property after numerous instances of problems with Pokemon Go players trespassing on his property.

Stephen Turcotte plays Pokemon Go Monday between signs on a stairwell in Hallowell that indicate the property is private.

A screenshot from Pokemon Go with a virtual character Nidoran located on a stairwell that is posted with a no trespassing sign in Hallowell.

This sign in Hallowell is offensive to local Pokemon Go players who say they are careful not to go on private property.