Thanks for your concern re mosquitos. I put a couple of drops of swimming pool anti-algae liquid in the water. I also bought an anti-mosquito larvae prduct that comes in large tablets designed to treat hundreds of litres of water. I crushed them up into a powder and add a bit every now and again so that mosquitos don't breed.
Unfortunately (this word is not strong enough to convey my feelings but expletives are not allowed on this forum!), we have the dreaded Tiger Mosquito here in Rome
https://en.wikipedia.org/wiki/Aedes_albopictus. These get you in the daytime and the local ones take over at night time. I only hope that Tiger Mosquitos haven't arrived in your neck of the woods yet. When they do, you'll know about it. You can follow their invasion of Europe under the chapter heading "Invasive Species" in the article link above. The chapter headed "Control and Suppression" offers little comfort.
Luckily they only make me itch. Other visitors get more extreme reactions. Applying a Deet based repellent is the only way to keep them at bay.