TERRO Drain Insect Killer - T590 Drain Fly Killer - Foam Drain Treatment - Drain Treatment for Drain Flies, Fruit Flies, House Flies, and Roaches

It does the job. No more drain flies for my bathroom!!!

ممتازه جدا جدا ومفعوله قوي وسريع

While spraying the solution stays liquid, and drain flies just escape via the drain back up.

easy to use

Great

Foaming is weak

Gave me 2 applications before it stopped spraying even though there is plenty of product still in the bottle. Not worth the price. Drain flies still present also.

Excellent

I can't say if this single product cleared out my drain flies but I did notice when the foam expands it brought all kinds of gunk up from the inside of the drain. Even after I thought I cleaned it pretty good. Gunk included a couple dead drain flies. Not sure if they were already dead or killed in the form but who cares - they're dead! I found it easy to direct the spray into the drain and it didn't take too much to fill the drain. I've still got plenty left after several treatments. My mom has COPD and I've got allergies that can be triggered by odor/perfume and this product did not cause any issues. There is almost no scent. I used this after letting Zevo flying traps (UV lights) run for about a week. Also treated the drains with Green Gobbler overnight. I still get the odd drain fly but I live in an apartment so it's possible some are coming over from other units.

Does the job but too expensive to keep buying for continued treatment. I have a total of four drains in my apartment. I was able to do a really good application. You really do need to shake this up so that the foam comes. After those four applications honestly, I only got one more really good one.

It works well - I had a drain fly infestation! Used it in 2 bathroom sinks, two shower drains and 2 kitchen sinks and had a wee bit left over. I expected the foam to stick around for a while, but it evaporates pretty quickly. I haven’t seen any flies since. I bought a second can to spray the following week but I’ve barely used it. The worst part of this is that I find it very hard to get out of the can. It’s got a sort of safety, and between that and keeping the can upright so it sprays is quite challenging. I wish they’d change the disbursal design.

We had annoying little drain flies popping up around our kitchen sink, and liquid drain cleaners just were not getting the job done. I bought this foam treatment, and it was a total game changer. The fold-up extension tube made it super easy to spray deep down into the pipes, and the thick foam expands so you can actually see it coating the inside of the drain where the bugs breed. I sprayed both sides of our sink before heading to bed, let it sit overnight, and noticed a massive drop in flies by the very next day. It didn't damage our pipes or leave behind any harsh chemical smell, and we haven't seen a single bug come back since.

Great price! I have one drain that has had drain flies for months. I foamed this in as soon as I got the Terro, and I have zero drain flies. I will probably reapply in a week for sure.