3 Pack De-Bird Duck Deterrent for Pool, Bird Repellent Balloons with Reflective Predator Eyes Scare Birds for Garden, Outdoor, Boat, Yard

I had my doubts that these balloons would work but my wife and I have been quite surprised at the success. We have an uncovered back patio with large trees that attract many birds. Normally, I have to keep our patio furniture covered to keep the mess from the birds from piling up on our table and chairs. Typically, the furniture becomes completely covered in bird droppings within 1-2 days and have to be hosed off, sometimes with a pressure washer. Two weeks ago I put up two of the three balloons I received into my trees directly above the furniture at approximately 25 feet high. They worked immediately! I noticed the birds hanging out in my neighbors’ trees, then some would land in my trees but only stay for 10-15 seconds and then fly away. We also noticed that in the morning there are normally many birds in our backyard but not since I put up these balloons. Over the past 2 weeks we have had only 2 minor instances of bird droppings on our furniture rather than the entire table being covered. Now, the only thing left to evaluate is effectiveness over a long period of time.UPDATE: It’s now been 6 weeks since I put 2 of these in my trees above my patio. Still working very well! Only 1-2 spots of droppings per week at the most and some weeks it has stayed dropping free. Also seems to deter squirrels as we have noticed much less activity and spots where they dig. Our problem birds included Black Crows/Grackles, Pigeons, Doves, Blue Jays, and Sparrows. They still come around (as we like seeing the birds) but they tend to stay out of the trees directly above our patio. Still a great product!