I give 4 stars because although it is effective and very immediate, since it kills the ants on the spot, the rest get suspicious and don't come near! Nevertheless, if you put it in cracks or at the entrance/exit of the ant nest, I believe it will do the job

I've had it for a week now, I apply it every day in the same spots, e.g. the kitchen, and the ants keep coming back, as if the gel doesn't even exist

Ants came out of the bathroom. I put it around with very small gaps between them but it didn't do much. They were moving around fine and I put the gel around. It doesn't have much inside. It finishes very quickly.

Within a few hours, it made the kitchen ants disappear.
I also put it on the balcony, it has reduced them quite a bit! In 5 hours so far.

It didn't work, zero results.

Update:
I'm changing it to 5 stars because after 5-6 days there is nothing.

Quite good
If the problem is at the beginning, in two days you have sorted it out.
If there is a major problem, it requires a little patience and if it is feasible, you can also play the role of Inspector Callahan, find the nest and put bait there so that you can see the light of day sooner