HVAC Guys Flow Tabs with Gel Lock Technology - 80 Pack - Keep Drain Pans Clean, Prevent Overflow, 3 Ton Tab Lasts up to 3 Months - 1 Tab is Equal to 18 Regular Tablets (1,440 Total) - Made in The USA

I put a mini-split in my home office so I can condition just that space to the temp I prefer when I'm the only one home. I love it, but the condensate line starts getting backed up with "gunk" (super scientific term) after only a month or so and when that happens, the condensate tray holds water and the fan starts spitting it out into the room. I cut these tablets up into 4 pieces and slip 1/4 tab at a time into the condensate tray on the first of the month and that problem has stopped. It'd be cool if they made these even smaller for those of us using these for mini-splits, as they tend to crumble a bit when you cut them, but the product definitely works and it's worth the effort to keep the condensate line running clear.

These work wonderful on my mini splits. Definitely recommend.

If there was any testing done by anyone to confirm how long these actually last, I would love to see it. I have tried the stacking as well, and it just melts and falls over. But otherwise good product and I have been using for several years now.

I purchased an automatic fluid dispenser to eliminate clogged up AC drains but I also purchased this product too, just in case! The price was right! I took one out and wet the bottom of it, then stuck it in the bottom of my pan. It stuck just like they said it would. I know I went a tad overboard but... I just wanted to be thorough. I think I actually bought 2 packs of these and they're going with me to my new destination.

Good price, size is adequate fits in most mini split drain pans. Just one is required in a small unit compare to multiple small tabs

Works great. Immediately got the sensors on my condensate pump cleared and functioning like new again. Highly recommended.

we use these in hvac dehumidifiers for swim schools and with that high of humidty they do not last long at all and do not work as well as they do in a basic hvac system.

Time can only tell if this product works well. So far I’m impressed with how easy it was to use. Smells nice. Hopefully it keeps my drain clean is spring and into summer. Will update review as we go.