My wife Patricia walks her dogs down High St several times/day, and recently was walking past the abandoned building on the east corner of High and S. Pine (with white columns). Recently she spotted what appeared to be a pack of rats (not cat behavior, too quick for raccoons) milling around at one of the corners. As they approached, the pack darted under one of plywood sheets closing up the building. In 25 years of living near the River, we have never observed river rats in the area, but had an episode with them around a house we owned south of Baltimore. They are very smart and resilient,, hard to get rid of. Hopefully they are not moving into our downtown. I am submitting this in case others in the Seaford downtown also report seeing them.