This was recipe for mosquito repellent was made famous on the Paul Harvey Radio Show, decades ago. It sort of got forgotten about it over the years but, with easy to get ingredients that aren't bad for your plants it is worth bringing back.
3 can(s) of cheap flat beer, cans should be opened a day before mixing (may have to hide them from certain family members ;)
3 cups Epsom salts
1 large bottle of blue mouthwash (no particular brand was noted just color.)
1. Mix ingredients in 1 gallon sprayer until salt is dissolved.
2. Spray on bushes, deck, porch, patio, grass....around where you want to sit outside, around the fire pit (BEFORE THERE IS A LIT FIRE), camping, kids’ playground.
Can last as long as 80 days before it needs to be reapplied however, in South Louisiana it rains fairly regularly so it may need to be reapplied more frequently.