Hello, this is going to be a full review regarding my experience with Periogen and I will update after my next dentist appointment in October 2015.Let me start my saying that I got this product because I had black tartar or calculus or what not all around my teeth and under the gum line. Especially the lower half, but that's not unusual because that is where food is chewed and stored and where your saliva gather all day. ( I am not a dentist, I do not know the differences between tartar and calculus, so I apologize for that)The first time I used Periogen, I knew it worked, because I had a mouth full of tartar, and knew exactly what tartar taste like from my dentist appointment so many years ago. After using Periogen for the first time, the taste of tartar was suddenly remembered as Periogen started to work it's magic. Now when using the product however, there is no tartar taste, and Periogen is in fact tasteless, my mouth feels so much better after using the product and I have noticed no damaged cause by using Periogen after 30 days.I got this product and started using it because I haven't been to the dentist in over 5 years. The last time I went is when I was 15. I am 21 now. It does work, you need to be patient and you need to be persistent. I will not say that the black tartar came straight off with this product because I've realize this product is no replacement for a dentist if you are already developing black fossilized calculus beneath the gum line or even above the gum line. I believe over a tremendous amount of time (Months and Months), they will finally finally get rid of tartar above the gum line or anywhere it reaches, but it will not happen overnight. The Periogen Mixture can only touch the surface of calculus, so it slowly wears it away. I recently went to the dentist and got all of my tartar and calculus removed, especially the one under the gum line. I knew coming into the dentist that they would recommend a deep cleaning, and that is what I had done. I would recommend you do the same if you're worried about your teeth and haven't been in a long time. As it is simply too late to be looking at "home remedy"After my dentist deep cleaning, I've continued to used the product. It does prevent tartar build up to a degree, but you have to understand that this is no replacement for lazy brushing or flossing. You need to brush correctly and floss correctly as well. If you're brushing the top and bottom row of your teeth together at any point, you are doing it wrong. You must brush them separately at a 45 degree angle inside and outside, then directly flat on top of your molar teeth. furthermore you should not be scrubbing back and forth like how TV and Movies have reinforced this method. THIS IS WRONG and it is a waste of effort as you're only damaging your gum line. As far as flossing goes, if you're sawing your teeth when the floss is in between two teeth, you're doing it wrong. I recommend you to YouTube videos regarding brushing and flossing to see how it should be done correctly and efficiently even if you think you're doing it right just to be sure.Now back to the product it self, I do admit I have been lazy a couple of nights, and did not brush or floss or used Periogen. I've noticed the tartar build up immediately, but most of the tartar was soft enough to be removed after a few pick at them with a tooth pick. However some still remained. After 5 more days after noticing tartar that I couldn't removed by toothpick, these tartar started to shrink in size very very VERY slowly but noticeably nonetheless.Periogen is a tool, a tool is only as good as the user willing to utilize it. The same goes for toothbrush and flosses. You need to use them correctly for the effect to work.I personally did buy a WaterPik for this product, but went against using it after awhile because it is very loud and disturb my household.In my experience, rinsing with this product will yield results to visible tartar above the gum line, but brushing with this product is better, and for best results beneath the gum line and in-between teeth WaterPikNow I know this is going to sound extremely tedious but this is my current routine until all visible tartar is gone I will skip the brushing with Periogen.At night before bed, I will1. Brush with toothpaste2. Floss after dipping the floss in my cup of water with Periogen mix3. Swish my mouth with Periogen once. and with the Periogen mixture still in my mouth I carefully brush my teeth with Periogen4. Swish the remaining mixture overtime until it is gone. (Usually 9 swish , 10 if counting the brushing portion swish from step 3, 30 seconds each, which turns to be 5 minutes)However in the morning , you don't have all of that food junk between your teeth, so my routine is different. I usually skip the second brushing with Periogen, and just swish the product 10 times as well as skipping the flossing UNLESS I decide to brush after breakfast.In summary, the product works, yes. But you yourself must apply the product correctly and take the time out of your day to be committed. I recommend you read the direction for the product carefully, as many fails to do so. Missing a routine at night before bed is the worse time to be missing one. Missing it in the morning isn't as bad, but still. Any routine for a good mouth will take time, especially at first if you have just started to learn how to brush correctly, your hand eye coordination will be slow as you need to position the toothbrush in many ways and learn the motion. Give it time, after awhile your routine will be faster. My whole routine takes 15 minutes usually. That's 30 minutes out of a day if I perform them both, but it is worth it in my opinion.If you have tartar build up and you don't have a routine that includes brushing/flossing/swishing. There is no magical remedy, the closest thing is your devotion. If you're using this product and still brushing/flossing incorrectly, you're just letting tartar build up as fast as you can get rid of them.UPDATE #1.After brushing today, I've noticed nearly all of my tartar from my days of laziness are gone!! Way faster than before when I first started using Periogen to try to remove 5 years old tartar. It's not really that fair of a comparison. Just letting you guys know that if you do get lazy a day or two and tartar starts to form a bit, do not distress! It will go away as quickly as you gained them. Cheers!! Very happy with my mouth at the moment. I was afraid that no matter how much actions I take, I would have to visit the dentist 4 times a year. But with this type of progress, I think I can lessen that a bit.