SC-3200 Duct Fresh Spray Air Freshener, Deodorizer, Professional HVAC Odor Remover for House, Automotive, 32 fl oz, Clear

Excellent product. It isn't a "spray and fix forever" type of thing, but we noticed an immediate difference. Musty smell coming from the airhandler/through the vents turned into a very pleasant smell for a day or 2, neutral smell for 3 days, and then only slightly "off" for the next week or so before the original smell returned but at a lower strength.

I don’t give many reviews, but I only just used this product and couldn’t wait to rave about it. I am a “smells person.” I HATE when something doesn’t smell right. I’ve had an unidentified smell in one area of my kitchen for quite some time. I cleaned everything I could including the metal vent filters on the hood fan above the stove. I still always noticed a lingering odor of food cooked long ago, strong spice/grease odors cooked onto surfaces… it was impossible to get rid of. I bought this product, turned my hood fan on high and began spraying up into the duct opening itself. I ran the fan for a while and eventually turned it off and went on to do other tasks around the house. When I returned to my kitchen the odor was gone and my kitchen smelled fresh for the first time in forever! This makes me so happy! I went on to spray those metal filters also, rinsed and replaced and my kitchen smells great! No telling how long it will last but I will surely be a repeat customer. Thank you!

This does have a strong scent - one other reviewer described it as "like a face full of baby powder". I don't use baby powder but to me it smells like the scent of the Febreze floor cleaner scent my wife uses. I'm hoping it smells the same way to her because otherwise when she gets home I'm in trouble since now the entire house smells of it and in general she has a low tolerance for scents especially anything floral. For whatever reason the Febreze stuff doesn't seem to bother her so I'm hoping I'm okay. Fingers crossed!That said it does seem extremely effective - we had a persistent "attic dust" smell every time we came home and I just had our ducts cleaned which reduced it maybe 90%. I squirted a small amount of this inside the main return duct and on the filter and the whole house smells of the scent. There's definitely no chance I could smell the residual "attic" smell. Applying scent to the filter is so effective I think even if I used it every single day I'd have more than a year supply but I somehow doubt that will be necessary. My $20 may have just bought me years of fresh duct smell.My bottle was shipped unsealed - there was tape around the neck of the bottle though - so you will be able to discern the scent without even using it. I suggest you let the most scent sensitive member of your household sniff it before applying and return unused if they find it unacceptable. I see other "no scent" odor eliminators but none say they are good for ducts. However I would imagine there's not really anything special about a duct freshener vs. any other. If you mist (as fine as possible) this or any product into the return duct while the A/C is running it's going to be distributed through the system, rinse and repeat. If you have any standalone air purifiers I think the same applies.If my wife does not freak out over the scent when she gets home I will spray it into my other return and report back in a week or so on how the scent and odor situation is. After all the idea is this neutralizes not masks odor. If there is no report back from me please call the authorities because I'm probably still locked up in the basement as punishment for stinking up the house :-)

This is a serious game changer! I've only had it a few hours, but felt compelled to write a review! My apartment building has shared vents (I can smell whatever my neighbor is cooking and vise versa). The cooking smells linger for what seems like forever and whenever the heat/AC comes on, it just blows gross old food smells. For me, it's at times nauseating. And despite changing out the expensive vent filters every couple months and even adding extra filters to the ceiling vents themselves, nothing seemed to help. I've scrubbed my apt top to bottom, bought air purifiers and use wall-scents/candles. Nothing. It was embarrassing to have people over. The other day, I decided to look up vent sprays and decided to give this one a shot. I just received this a few hours ago and used it immediately. I sprayed it on the ceiling filters themselves in addition to the vents. The vents just came on and there's no old good smell!! It just smells like fresh clean laundry. I'm not sure of the longevity...but for right now, I'm so thrilled to FINALLY have that food smell gone!!

I have issues with a lot of scents and was hoping this would eliminate odors without adding some sort of annoying scent that would bug my sensitive self. I've got chemical sensitivity so I'm really sensitive and this does not smell horrible but smells sort of like baby powder and it gives me the feeling in my mouth like someone just squeezed a bottle of baby powder.It's possible that it's just me and everyone else thinks this smells great. Maybe it will dissipate in a few days and leave the house smelling just cleaner but so far I won't be spraying this in my vents again. We have two systems and I just sprayed it into the intake for the downstairs first because I did not want to get it in the one where I sleep until I knew how I would like it. I think I will pass on doing it in the upstairs based on my experience with the downstairs.Also an aerosol would make better sense rather than a spray bottle if you want this to trully travel through your air vents.I still gave it 3 stars because I realize a big part of my reaction could be my chemical sensitivities. It's too bad they do not make a sample size spray to send out so people could try first before buying a huge bottleThanks for reading my reviewBecky Brooks