DWD2 Clean AIR® Premium Foaming Automotive Evaporator Coil Cleaner (Unscented) Experience Fresh Clean Air - Renew Your Air Conditioner and Enjoy a Comfortable Driving Experience Today! (3 PACK)

So I bought the 3 pack of cleaner without the maintenance can for a 2020 Volvo S60. The AC smelled like stale smoke and had a funky moldy stink as well. I dont smoke! Getting the nozzle hole drilled in was the hardest thing to do just because it's tight under the dash. I first used a bottle in the vents from the dash down to clean them out. Then used it in the system as described in the instructions. Immediately could smell a difference. After doing the whole treatment, it no longer has the smell and the ac is so much colder. The picture is what came out of the drain tube. A yellow-brown gunk of who knows what, and this is after the filter in the system.If you are worried about drilling a hole, it's 3/16 of an inch, and comes with a plug to fill the hole when done. Sealed back up perfectly. The difference is amazing, I will edit if it doesn't last, but as of now, highly satisfied with the performance of the product.

Seems promising but I have not used this product, I will update after use.

I have tried many brands of AC evaporator coil cleaners and this is the best. After one use it got rid about 80% of the funky smell coming out of my car's AC vents. I think another bottle is needed to get rid of the smell completely. It is very easy to use. You will need to drill a small hole in the AC motor housing to pump the cleaner in. I was not sure where to dill the hole so i sent an email to the company and they got back to me super quick. I have many cars so i bought the three pack. I took off one star because you will probably need two cans of this stuff to completely get rid of the smell.

Total crap, save your money, this stuff does nothing more than waste your time. I checked my evap coil with my bore scope before and after using this waste of money, NO DIFFERENCE!! I’d give it zero stars if I could.