Black Bird Spike Kit Plastic Bird Spike Defender Size:300×80mm, Spike Height 5mm,Pack Of 10.

These are not much of a deterrent.

In no time, the spikes were covered in bird poo. Didn't dissuade birds in the least. The plastic strips have little side holes for tacking them down. Despite my most gentle taps with a ball-peen hammer (used carpet tacks), the plastic loops broke off.

The pigeons walk right on the spikes, need to buy bigger spikes

Easy to install on fence, keeps the critters from using my fence as a highway and have noticed a big decline in my backyard.

The item is as described but, unfortunately, the spikes are too far apart to discourage birds. The birds are still managing to perch in between the spikes.

Works just as intended.

Does not work for squirrels, rats, or small birds.Maybe for larger pawed animals like cats.