Hi Christine –
The following has been taken from our page on non-toxic mosquito control (https://www.planetnatural.com/pest-problem-solver/lawn-pests/mosquito-control/).
Unfortunately, there is no easy solution for managing mosquitoes. Countless natural techniques vary depending on the pest level, water supply, cost and risk of disease. Many products are available, but nothing is absolutely foolproof. Here are some suggestion:
• Mosquito Beater Granules and Spray use food grade oils to naturally repel biting insects for 2-3 weeks!
• Kill the immature larval stage before it can develop into a flying, biting adult with Bacillus thuringiensis var israelensis (Bt-i). Available under various trade names, Bt-i is a naturally occurring and highly specific biological pesticide. Applied to standing water, it is effective for up to 30 days and will not harm people, pets, wildlife or fish.
• Flying, biting adults rest in protected areas during the day. To reduce populations, use a Mosquito Fogger — made from organic plant oils — or apply Mosquito & Tick Spray on shrubs, the lower limbs of shade trees, under decks, along foundations and other pest resting sites.
Hope it helps!