Summit Mosquito and Gnat Barrier Covers 10,000 Square Feet, 1/2 gallon

Excellent product to reduce gnat population! I live near Washington DC and our neighborhood has a huge gnat problem. We can’t walk through our yards without getting dozens of them swarming our heads. Using BTI dunks in traps, fountains, and gutters didn’t make a difference (although you still 100%). I suspect they are growing eggs in the mulched areas. Either way as adults they exist by the dozens in our regular grass lawn area. Off! yard spray and spectracide yard spray does NOT work, despite the chemicals listing online as gnat killers. It may be the concentration. Anyways this summit product works well with permethrin. After spraying it’s a clear difference. From dozens to 3-4 only flying around as we walk through. It’s a clear and significant knockdown of the gnat population. How long it lasts really depends on the rain and how fast the survivors breed (this is why still use BTI in any breeding water areas). Rain I can’t control, and neighboring yards I also cannot control. Regular rain I’d say it lasts about 3-4 weeks. Heavy flooding rain probably 2-3 weeks. I aim to apply every 2-3. HOWEVER if there’s a really bad infestation after a long period of heavy rain, you might need to spray 2x over a few days to really get the annoying buggers

It works immediately and long lasting

Works. Doesn’t last long- like your boyfriend. Reapplication every 2-3 weeks.

Not very happy with the product. Still got at up by sandfleas, but haven't seen the mosquitos.

Works great for repelling mosquitoes and gnats in the garden. Easy to use and a good price.

It DID NOT WORK for me! I sprayed it all over front, back and side yards, entryways, windows, plants, etc. and went inside. The next day the mosquitoes were just as bad as before! The gnats were, too! I have tried it 4 times now and the mosquitoes are still there! It doesn't even work for a day! As soon as I step outside the mosquitoes are after me, so I can't do ANYTHING outside without them on me! They are even getting in the house EVERY DAY! I can't escape them and I was really hoping that this stuff would work, but it didn't. I tried several times to contact Summit to get help, but never got a response, so I am now returning the bottle. Don't waste your money! Also, I originally ordered the concentrate formula, but they tried to ship it twice and it was somehow damaged in shipment both times! Now, they won't try to send it again.

We had sod installed in our backyard and along with the sod came gnats. Obviously new sod needs lots of water and the gnats took full advantage of it. We hoped the swarming gnats would eventually die down but didn't. We searched for a solution and came up with a few options. One option was Summit Mosquito & Gnat Barrier and after calling the company and speaking to a live person, decided to give it a go. So far no gnats!!

We have a lake house, and the nats were the worst. I sprayed this on the porches, and all landscaping out to about 20 feet of the house. Then did the same thing the next day. For nearly 10 days - NO nats. I applied it again about 10 days later and we are nat free. Its worth it for me.