It's easy to setup , I used bottles for several liquids for my applications such as hand sanitizer, kerosine, ispropyl alcohol, vinegar, etc, one of the bottle stopped working soon after the pressing button gets stuck in the place and you've to manually pull it up, I've used kerosine in this bottle other bottles I've not used much but the one with larger nozzle feels good but I do think these bottles have a limited keystrokes before it stops working. Anyhow it might be just one fault item. Yo...

Sprays not working properly, not as expected