4PCS Deer Whistles for Car, Automotive Save a Deer Whistles to Avoid Collisions, Vehicle Deer Warning Devices Horn Sensor, Universal Animal Alert Car Accessories (Black, 4 PCS)

Came in fast! Easy to install. Perfect size. Adhesion is great. Appearance, they just blend right in to the bottom front bumper of my Equinox. Great Value! So far, performance is as described.

Haven't put them on yet,but have purchased before. They work good.

Excellent product. They work wonderfully

Put one set on my 2016 GMC Seirra. Other set will go on the 2022 once it gets back from the body shop (yup smacked a deer). I have noticed a difference in that the deer seem hesitant to run in front of me now. THese are not 100% fool proof, but they at least give you a fighting chance. Silent from inside a moving vehicle.

Works well

My previous devices were more traditional horn shape and came off frequently in car washes. These have survived 3 washes so far. I used two per vehicle. There is no info from seller about one or two per vehicle. Horn syle usually are each different pitches. These are dual holes, so assuming each is complete by itself. I mounted so they are very slightly pointed off center to better hit sides of roads. I normally see deer frequently, have noticed a decrease in them. I mounted one set under a civics front bumper and mine in the grill on my Nissan Pathfinder.

I do like that it sticks tight to your car. My big dislike is, is how hard it was to get the red protective film off. I have some arthritis in my hands and I almost gave up on it.

Ok so I read the reviews that said they worked and thought their crazy but I bought them anyway because I’m terrified of slamming into a deer in my parents areaWell finally after almost two months I was coming up to where a buck was standing and it got scared awaySo I guess they work