Sunbelt Labs Aqua Fresh Deodorizer for Rainbow Vacuum Cleaners – Odor Eliminator & Air Freshener – Compatible with D2, D3, D4 Models – 32oz Concentrated Formula

Have owned a Rainbow vacuum for many years, I always put a capful in the water reservoir, it helps freshen the air while vacuuming.

Smells clean and freshens the air like I like. Easy to use.

Unfortunately it's not the same as the Rainbow scent. More foamy than air deodorizer

Good

I got this as a more affordable alternative to the brand name aroma for our cleaner, and the scent is what I expected. However, in order to actually notice it, you do need the 2 cap fulls as instructions indicate, but using that much on even speed level 2 of 4 made the tank so foamy/sudsy that I basically had to stop it within 10 minutes, dump what liquid was left out and start fresh. I tried 1 cap full, and again in level 2, it began to foam up. I dropped the unit to the lowest level and it was fine but barely noticeable scent at that point. After several hours in low I was able to bump it up to the next level and it didn't foam as much so maybe that's the key, but I have yet to be able to figure out how to use 2 cap fulls in our unit.

I ordered this thinking it would have my house smelling fresh in my rainbow. It does not smell at all. Puts off no scent. Total waste of money.

Keeps the house fresh.

Leaves a residue when the water evaporates from the rainbow