Envii FOG Klear – Strong Drain Odour Remover & Unblocker, Enzyme Drain Cleaner Breaks Down Grease & Fats in Kitchen Drains & Septic Tanks, 12 Tablets

Fantastic product — but there’s a trick that makes all the difference, and honestly it should be on the instructions. Use warm water at around body temperature, drop the tablets in, and mix until you get a brown liquid. Let it sit for about 5 minutes, give it one last stir, then pour it slowly down the drain to coat the pipes. Leave it overnight. The warmth is key — it activates the bacteria. Boiling water kills it, and cold water makes it sluggish, so that sweet spot really matters. If the first round doesn’t fully clear it, repeat. I started with 2 tablets each time and now just use 1. Note: it can take up to 48 hours to fully work. Once you get the method right, it really delivers.

Like most on here, I had an drainage issue from my treatment plant. I had it emptied the day after I realised it was nearly overflowing and was advised I would need a new drainage field / soak away. With the cost being £1000+, I went looking for other solutions as the install was only 3-4 years ago. I purchased these and took a stab in the dark the blockage was caused by grease. Upon first use I used 3 tablets devolved and poured 1 directly in the tank and the others as instructed. The next day there was no change and the level was slowly rising up again. I then purchased some drainage rods and rodded the outlet pipe. That also seemed to make very little difference. I added more FOG tablets direct to the tank. The next morning the level had started to go down! Slowly but going down at least. Day 4, the tank was back to normal level . My opinion is that the combination of the two allowed the speedy results seen. I will.be keeping up with the treatment going forward.

using this to enable the clearing of pipes, not entirely sure if they work or not to be honest but benefit of the doubt.

I moved into a newly built house and found that the kitchen drainage from the dishwasher plus sink uses the same pipe to the municipal general waste pipe. After about a year, the overflow outside began to regularly fill and a stream of combined kitchen water would pool. I tried the basic drain cleaners/unblockers (supermarket) to no avail, then moving to caustic soda and pressurized water jets. This helped (it was still not easy flowing drainage) temporarily but did not last more than a month, and as each occurrence was costing about a hundred euro to repeat, was almost to the point of calling in builders to rip out the piping to permanently fix the issue. I saw this product mentioned in a forum and thought what did I have to lose. I am so glad I did, it has solved the problem on just one packet. By using two tablets per session, placing one in the kitchen sink as per directions to settle in warm water and slow drip plus putting another in the overflow (why not), it caused large blocks of accumulated suds and fat to break free. I have also changed dishwasher tablet brands as a result, as I think the brand I used before was causing all of this. These tablets do not solve your problem in one or two sessions, but having repeated the processes once a week the water drainage is now free flowing and the overflow is never full, the accumulated fat plus suds is almost gone when checking the drainage going into the municipal pipe. I still have 4 more tablets in the packet and think I could stop at the current stage, but having ordered another packet, will finish just this batch. For the price and the results, I have never been happier with a product!

Actually made things worse for my drain in the kitchen. It says for drains but on the packet it says it’s for septic tanks. Very misleading. I had to buy another product to unblock my kitchen sink. It also didn’t get rid of any odours. Waste of money.

It’s hard to say how well this works with clearing the drains however since using this my septic tank has worked better. I use this along with the toilet tablets once a month and have not had any problems since. Easy to use and good value

Had a blocked drain which had to be cleared out. Hopefully, regular use will prevent further blockages.

Brilliant product, we have had amazing results since we started using this.

I was not expecting too much in the beginning. When I realized my kitchen sink was having a slow drain, I firstly used salt and baking soda, then I saw there was no improvement so I tried to use stronger chemicals. But I actually also didn't really have good experience with those chemicals since my last experience led to a complete stop.. So I was trying to find something more biological approach. I thought the tablet wasn't doing much of the job, since when I applied the first tablet, it didn't really work. Then I tried to open the upper pipe and cleaned out whatever dirt was on top, and I thought just to apply another tablet to see if works, but also at the same time, I contacted a plumber and made an appointment. After a full day out of work, I came back home and miraculously found my sink started to drain properly and worked again! Thanks for the little bugs in the table saving me some extra cost! I will apply this every now and then to keep my kitchen pipes flowing :D

Hace su cometido, el pozo ciego está genial

Produit efficace

it works! It helps well on an annoying long and horizontal piping.... Recommended!

Funziona!!! ad una settimana dal suo impiego, la condensa grassi è pulita! in precedenza, dello stesso produttore, avevo usato il disgregatore liquido, ma francamente bisognava ricordarsi di dosarlo con cadenza settimanale, questa pastigli invece, una volta al mese, mi sta risolvendo il problema della vasca intasata dal grasso! infatti uso sempre poco detersivo sia nella lavastoviglie sia nel lavandino della cucina e nella vasca ci trovavo di tutto!!! oggi, dopo una settimana dall'uso con regolare vita in cucina, la vasca è pulita. molto soddisfatto.