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“Cafiza is like a secret cure to the worst burnt pan, scalded pot, or even rust,” said coffee shop owner Adam Keita.

Tessa Flores is a Staff Writer for HuffPost covering a number of shopping topics and lifestyle trends.

Following the brand’s intended soaking method, you just mix a teaspoon or less of powder with boiling hot water and submerge the stained glass or metal item (or in the case of espresso machines, just run a back-flushing cycle). Let it soak for 30 minutes, then rinse clean.

″So I was looking for something to clean my Ember mug. I didn’t know it at first, but apparently these cool mugs can get coffee stains pretty easily. I’ve scrubbed over and over and could not remove the stains. So I tried this powder and about 20 minutes later, the mug looked brand new! I didn’t actually use boiling water either, but just as hot as possible from the tap. Also, don’t fill up the mug/cup that you’re cleaning because it will eventually bubble up a little bit. I only put in enough water to fill up the mug halfway. I also used it on my Yeti mugs and now they look brand new, practically seeing my reflection in them! I’m already recommending this product to family and friends.” —Diane Jennings

“This stuff removes the resin from the Devil’s Lettuce extremely well. Hot water, soak your glass pieces for a few hours, they come out sparkling. Rinse thoroughly and enjoy your spotless glass!” —Dosmit Raeh

″It works on a lot of hard cooking stains. No outcasting. Didn’t burn any of mine existing surfaces, just removed cooking stains. Coffee stains, burnt on oil stains on pans. All gone, this is a good product.” —Heather Kearns

“I have used Cafiza cleaning powder since I worked in Starbucks a few years ago, so when my family opened a cafe, I put this on the TOP of things that we needed. They doubted me until I showed them the cleaning power of Cafiza. It gets the thick stuck-on coffee stains on urns, caked-on gunk of convection oven trays, cleans the espresso machine, cleans milk off the inside of steaming wands, gets grill gunk off of grill brushes, etc. You name it, and Cafiza will probably clean it!

I WISH I was sponsored by Cafiza to write this review, but I’m not. Just a happy happy customer who won’t clean with anything else! The value for your dollar is too good to beat for a product that performs so well with so little! I go through about one of these per month to a month and a half with daily use in my machine, steaming wands and grill brushes, and weekly or monthly use on my runs and other appliances that develop buildup.” —Carly

“I have had my coffee tumbler for about 5 years, so the inside was stained pretty badly. And for probably about two years, on and off, I tried to clean the stains with regular soap, dish soap, then finally vinegar. But nothing worked and it remained dirty and stained no matter what. For some reason it finally occurred to me that Google might know how to clean these tumblers. Fired up the search engine and this popped up. Read the reviews of all the raves and how well it worked, and I was skeptical. ‘No way this works as well and as eas as these people make it out,’ I thought. I was wrong, and all the reviewers were right. This cleaning product works AMAZINGLY well and is super easy to use. Just put some Cafiza in there and like magic the inside of my tumbler looked brand new again. I couldn’t believe it. I could have saved so much time if I knew about this before. This bottle is also a huge amount and so it will probably last me a few years. Once I run out though, I will definitely buy this Cafiza cleaning product again. A must have for all coffee loving tumbler owners.” —J