Juice Cleanses Are Mostly Sugar Highs
The theory behind the juice cleanse is simple -- drink nothing but bottles of juiced fruits, vegetables, and herbs for a few days, and you will be cleansed of everything from toxins to fat to mortal sins. In reality, all you'll actually be cleansed of is about $200 worth of juice. First, "detoxing" is a myth. Unless you are kicking a drug addiction, you will never need to detox your body. In fact, your body can detox itself using those fancy kidneys and liver your doctor always raves about.
Second, juice cleanses don't help you lose weight -- at least not in a healthy, long-term way. Most juice cleanse programs have you consume about 1,000-1,200 calories a day; way less than the 2,000-3,000 calories an average adult should be consuming. So yes, you will lose weight on a cleanse, but you'll also be starving (something that you can do just as well by not eating). And when you go off the cleanse and start eating normally again, you'll quickly regain the weight. Ugh, now you feel all gross and fat. Which means it's time for another juice cleanse!
The juiced beets fad is just as much bullshit as the audio one.
The "energetic rush" people feel on a juice cleanse is likely just a sustained sugar high. "Cleansing juices" typically have 75-190 grams of sugar per serving, whereas a can of Coke "only" has 39 grams of sugar. The juices are also low in fiber and protein, which means a lot of the weight loss people experience is actually muscle loss, rather than fat. Honestly, if you want to stop eating food, lose a bunch of muscle, and burn money at the same time, just take up meth. At least your house will be clean.
Most "Natural Cleaners" Either Aren't Natural Or Aren't Cleaners
Natural cleaners are a $600 million industry, and they're sold in most major grocery and drug stores. The only problem is, most of them are hoaxes. There's no guarantee that those cleaners are actually natural. It's true that the Federal Trade Commission has set standards for the use of the words "natural" and "green" on product packaging, but even the EPA says that these policies are poorly regulated and rarely enforced. Since companies are in the business of making money, rather than the business of telling you the truth, there's a very good chance that your "natural" Himalayan Yogurt Soap is actually just Clorox with a picture of a yak on it.