The answer to 'when to treat for mosquito' is that the best time to treat for mosquitoes is in the spring and early summer, before their population peaks. Mosquitoes typically breed in standing water, so it's important to treat for them as soon as the weather starts to warm up and standing water becomes more prevalent.
Treating for mosquitoes in the spring and early summer helps to reduce their population before it gets out of control. This is the most effective time to treat, as it disrupts the mosquito life cycle and prevents them from reproducing and spreading. Once the summer heat arrives, mosquito populations can quickly explode, making them much harder to control.