I just went from opening my tent to a swarm of gnats to finding handfuls over days. Theses neematodes are amazing. I was able to order from Walmart or a few other greenhouse supply shops. I used to use the powder formula and it required refrigeration. This required no refrigerator but did need daily watering for 3 days so it takes some planning to do without overwatering. These are hands down a good buy. I’m on my 3rd day since applying and it’s a huge difference. I had mouse glue boards filling up with gnats in a day. Edge to edge the glue board would be packed to the gills. Now I have them in there and find a handfull on each after a full day. Hope this product can help save someone else in the future.