It absolutely works on squirrels at my house.  We have a whole family of squirrels that would empty my old bird feeder in less than half a day.  Not to mention the birds that were lucky enough to get to the old feeder for the squirrels could not eat without major aggravation .  My new Squirrel-Be-Gone Feeder arrived within 3 days after ordering.  Nothing to put together except screwing the weather vain on top after filling with bird seed.  Our birds were eating, perching, and happily hopping around the " new feeder " within 2 days after putting it up.  The Squirrel Be Gone Feeder seems very well made and is a pretty bright red color.   No regrets on my purchase and I would definitely recommend this feeder to others dealing with squirrel issues.