For a few minutes, the pigeons were gone and then after a while, the same thing happened again. It does have a really bad smell, but the pigeons were probably wearing masks - there's no other explanation :-)

It does not drive away pigeons right away. It takes about a month. You have to put it every day at first and the pigeons gradually decrease.

Then you need to put it once a week again. Generally, it is good to make it as difficult as possible for the pigeons (spikes, awnings, etc.), otherwise you will eventually have to put it on the balcony floor. And this simply requires using more liquid.

Generally, pigeons have very specific habits and it is difficult to change them. Therefore, you will always have to periodically put liquid where they go and sit.

I used it according to the instructions and saw results very quickly. The smell is unpleasant while using it but disappears afterwards. I used it on a very large surface, like a terrace.