Kinzua Environmental Fly-Zyme, Highly Concentrated Enzyme Drain Cleaner for Pipes, Drain Gel for Fruit Flies, Organic Waste Degrader & Odor Neutralizer, 1 Gallon

I had phorid flies in my studio apartment. Not many, but in a small apartment they were very noticeable and I swear they were taking up 99% of my mental capacity. I would go to sleep thinking about the flies and wake up still thinking about the flies. This worked very quickly. BUT YOU HAVE TO PUT OTHER TRAPS OUT TO CATCH THE ADULTS. I used Zevo light traps which were the best, and put out little tubs of apple cider vinegar with dish soap. This also helped me monitor the number of flies daily. I used the flyzyme twice a day in all of my drains, essentially any time I was able to let it sit for a few hours. I also used it for 10 days straight. By the end I had no more flies.

I have purchased this product 9 times since 2021. It did a great job of keeping my drain gnats away.I recently bought a new bottle and found that THEY CHANGED THE PRODUCT. The bottle was not full - and not because it leaked during shipment. The new bottle was tightly wrapped in cellophane and there were no signs of leakage. Additionally, the product itself has clearly been watered down. It used to be a very thick gel that would cling to the drain. Now it is a watery syrup. Clearly, the company is cutting corners, yet charging the same price. I doubt that the watery syrup will work as well as the thick gel.Update: Customer Service reached out to me immediately after my initial review. THEY REFUNDED MY ENTIRE PAYMENT, apologizing for my experience. They asked that I keep the product and assured me they have not changed the formula nor did they water down the product. I changed my rating to 5 stars for their outstanding customer service. I have always loved this gel. I’ve tried everything and this is the only thing that keeps my gnats under control. It also has a very pleasant smell. They won me over with the best customer service I have ever experienced on Amazon.

Didn’t work at all for me.Updated: I was really disappointed that this didn't work, even after following the instructions for 5 days. I was super impressed with their customer service though. The company contacted me and offered me a full refund which I really appreciated. I changed my review to three stars just off the quality of the customer service.

So I was a little nervous about how the house would smell but I was willing to forgo any unwanted smells if it got rid of the unwanted pest that had been invading my home. So the 1st day as expected they were angry and came out of their layer after I had used the product on all the problem drains in my home. I had my handy bug zapper right there with its calming blue light to accommodate them and send them into oblivion humanely. So 2nd night after application #2 wasn’t as many pest so great. Night #3 maybe one or 2 pest but other than that I think it’s taken care of the issue and I still have plenty left in case of any other future issues. Also it seems to have made the drains work a little bit better so I would say that it does work to clean out grease and clogs as it said.

Works as advertised. Follow directions.

Works great

I followed the instructions and this product did not solve the problem. Still had drain flies.

I travel a lot, so I am away from home often. I developed a nasty case of drain flies for months. Nothing I did worked - bleach, vinegar, covering drains. I finally caved and bought this begrudgingly due to the price. But oh my gosh - it worked after one application! I pour a glug down each drain (so easy to use and no overly strong smell), left for a week and those peasky flies were 100% gone. I still have half the jug left in case it happens again, but it's been weeks and I'm still fly free. Now that I know it was a one time purchase, and not getting stuck in a loop of having to repurchase, I would buy again - great value!