What are the impacts of mosquito spray treatments on caterpillars, butterflies or lightning bugs?

This one gets tricky and can be very product specific, but generally, the answer is, have no fear!  Yes, certain active ingredients in pesticides may be toxic to beneficial insects upon direct exposure.  But when it comes to mosquito control, four key things reduce this risk:  

1.  We don’t spray just the active ingredients.  We use highly-refined formulations, most of which are made with less than 5% of an active ingredient.  

2.  ULV treatments deliver a very, very small amount of product optimized to control mosquitoes--usually about 1 tablespoon or less to treat an acre (which is rouhly four typical suburban home lots or a football field). Why so little?  Because the dose is specific to mosquitoes, which are much smaller in weight than most beneficial insects.  For reference, mosquitoes weigh between 2 and 10 mg each.  A firefly weighs at least 20 mg.  

3.  Next, that very small amount of product is delivered in super-tiny droplets--think 15 droplets on a pin head.  The droplets float through the air and work by making physical contact with adult mosquitoes in-flight.  

4.  And lastly, we spray at night when mosquitoes are active and other beneficial insects are not.  

Show All Answers

1. Will mosquito spray treatment harm me, my kids, or my pets?
2. How can I receive notification in advance of spraying for adult mosquitos?
3. Do I need to cover my plants before a mosquito spray treatment? Are garden veggies safe to eat after a treatment?
4. Should I turn off the air conditioning in my house or shut windows when a mosquito spray treatment occurs?
5. Will mosquito treatments also control ticks?
6. What are the impacts of mosquito spray treatments on caterpillars, butterflies or lightning bugs?
7. Won't mosquito spraying hurt the bees?
8. Why can't I see the mosquito spray coming out of your truck? I didn't hear your truck!
9. Your mosquito spray trucks are driving too fast for that treatment to work! You missed my house!
10. Why can't you spray for mosquitoes more often?
11. It rained right after you sprayed for mosquitoes--did it still work?
12. What else can I do to control mosquitos?