(Four-Pack) One-Drop Concentrated Deodorizer (4 x 0.67 oz) by OneDrop(TM) (1)

I purchased One-Drop to take on a cruise. Although we had a larger bathroom in the suite, we didn't want to deal with any bathroom smells. I must say, I was skeptical at first, as I had never heard of this product. However, I was surprised as this product worked wonderfully! No lingering odors, ever! One-Drop was not too strong and left a pleasant scent. It didn't cover the odor, it was eliminated! We used one to two drops before and after flushing. I highly recommend this product! for use at home and while traveling!

One drop does it.

Better than any other product we used. Just one drop deodorizes with a pine scent. We take this on trips and leave it out for our guests to use. Highly recommend.

Keep a bottle in my purse. It’s great when visiting other peoples home

Product can be used either before or after to immediately stop odor.

I found if I squeeze the bottle, way more than needed is used. Hold the bottle over the bowl don't squeeze the bottle, and generally one single drop will fall. This is all that is needed. With a full bottle it may not drip. Shake one light shake (like using a saltshaker lightly) and you get the one drop. As the bottle empties you may not need to shake the bottle at all. You really don't need 2 drops. Using the product in this way will get months out of one bottle not weeks. In a tight space (half bath) two drops can be quite overwhelming.

Works to eliminate unpleasant bathroom odors. Wish everyone would use!

For those of you skimming through the reviews unsure about making a purchase, I can tell you this thing works. Buy it. You need read no further, but I'd like to share a few observations.First, a couple of disclaimers. I am not a chemist. I can speak only from daily experience with foul odors and some general training in the physical sciences. Also, I have largely relied on my own nose for these observations, and you know the limitations associated with that. Your own "business" never smells as bad to you as it does to others. And, after a period of time seated on the throne, you become partially desensitized to your own odors (and your legs fall asleep... but I digress). I do not have the kind of relationship with my wife where I can call her over for a second-person opinion every time I eject the processed remnants of an earlier meal. ("Honey, come over here and smell this, would you?")That said, let me cast into doubt some previous reviews which suggested the same might be accomplished with an oil and that the mechanism at work is a thin-film barrier atop the toilet water, such as that which might be provided by an oil slick. I haven't tried the suggested oils, so I can't comment on that, but I do have trouble buying the film barrier theory. Here's why:1) The One-Drop liquid does not behave as an oil. It sinks into the water and seems to dissolve. Certainly, no noticeable oil slick is created. Try letting a drop of oil fall into a container of water. It stays on the surface upon impact, and the drop stays a drop (i.e., no slick).2) Once your masterpieces are under water, they are largely incapable of contributing to odor in the bathroom. Ipso facto, no barrier is required. Thus, unless you consistently shoot floaters, the bulk of the stench is created, I strongly believe, in that short period of time your digestive by-product spends in the air after exiting your system and before entering the containment water.The foregoing suggests to me that, among mechanisms at work, there is a strong airborne component to the One-Drop product's efficacy. Additional proof for me is its surprising effectiveness with gaseous emissions, often as much of a contributor to foulness as launches of the solid variety.Is One-Drop perfect? No. I'm sure I can throw something at it at some point that will reveal its limitations. But so far I'm sold.