My condo is on the 6th floor so its the perfect height for Pigeons...
Pigeons use to hang out on my balcony and shit all over the place...
I found these swirly reflective things on Lazada.... They said these were Pigeon deterrents...
I had Low Low expectations they would work....
But let me tell you Pigeons are absolutely terrified of these things....
Not a single Pigeon has been on my balcony since I put them up...