The liquid does the job. There are reviews that mention it doesn't do what it promises. For me, it works. What I have realized is that mosquitoes mutate every year. It's not possible to go through life without having a particular problem with bites and suddenly be attacked, especially by gnats and very small mosquitoes that appear this year (2024). I put it in the bedroom and immediately felt calm. In the end, I think insect repellents are sometimes less effective due to the nature of the insects. I can't find any other explanation.