Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Seems to be working...

This is the third electronic type gadget I've purchased to keep the feral cats off my porch. The males are having a contest to see who can "mark" my porch doors and walls the highest. Walk downstairs in the morning and your stomach turns...This thing seems to actually work. No odors, no cat fights overnight, no new "markings" on the walls. Have to think it may have just solved the problem.