The YokoNex Automatic Enema Machine is one of those products that initially sounds over-engineered. After all, people have been putting water up their arses quite happily for a very long time without Bluetooth, automatic pumps, an app, sensors or inflatable retention bulbs.
But YokoNex has made a very compelling argument for technological progress, because this thing is fucking brilliant. It’s an automatic, app-controlled, Bluetooth-enabled enema machine with an inflatable retention bulb.
Rather than simply relying on gravity from a bag or squeezing a bulb by hand, the YokoNex Enema Machine automatically pumps liquid at a controlled and adjustable rate while an inflatable bulb helps keep everything inside. The result is a steadily increasing sensation of fullness that becomes genuinely intense, followed by an absolutely spectacular release when the bulb finally deflates. Or, if you’re being instructed by a mistress to keep it in, even more agony. There’s a real challenge here, and it makes for a powerful tool in a BDSM dynamic.
I mean, I suppose it also works for vanilla types who just want an automatic enema, but that’s not really the focus of the product, nor of this review.
If you’re using it anywhere other than sitting directly on a toilet, I am entirely serious when I suggest putting down towels or wearing an adult diaper. Once that bulb deflates, negotiations are over.
Table of Contents
Video Review
How the YokoNex Automatic Enema Machine works
The basic system consists of a roughly four-inch-square by two-inch-tall control unit, an inlet tube that sits in your container of water, and the insertable nozzle with an inflatable retention bulb. The tubes are all helpfully labelled with letters and are connected in order, although it’s worth clarifying what each one does because it can become a mess of tubes; color coding them would have been more useful tha.
Tube A, which sits slightly separate from the other two, is the inflation tube. Air comes through here and into the bulb. Tube B is the inlet valve, which goes into your water supply, such as a jug. Tube C is the water outlet, which connects to the larger black tube.
That larger tube then branches, with one side feeding into the centre of the bulb to deliver water, while the other acts as an outlet. Normally this is blocked, for obvious reasons, but you can use the release valve for a controlled manual release of the solution. It comes with a basic hose lock, and sliding this along releases the pressure and allows the liquid out. The other option, of course, is simply to deflate the bulb and let nature do its thing — suddenly and very violently.
Once inserted, you can inflate the bulb to help create a seal. This is optional, of course, and you should make sure you know the limits of inflation beforehand, ideally testing it at different speeds before use. There’s no hard limit or pressure-release valve, so it is possible to over-inflate it, and the results could get very messy indeed.
The machine can then pump water in automatically rather than requiring you to repeatedly squeeze a traditional enema bulb. I’m no stranger to basic anal douching, but I’d never previously gone for a proper large-volume enema, so for my first attempt I prepared around 500ml of warm saline solution and started cautiously.
At perhaps 100ml, I was already questioning my life choices.
The feeling of pressure builds remarkably quickly, and your body’s immediate response is essentially: **get this out of me.** Except you can’t, because the inflated bulb is still sitting there keeping everything inside while the machine continues pumping.
That creates an extraordinarily powerful feeling of fullness. Depending on your tolerance, it can sit somewhere between deeply satisfying pressure and quite challenging discomfort, which is exactly why the adjustable flow rate is important. Then, when the bulb deflates, there’s a brief moment where your body seems to realise that the exit has suddenly reopened, followed by an almost immediate and completely involuntary evacuation.
I couldn’t have held it if I’d tried.
As a sensation toy, rather than merely a cleaning device, it’s fantastic.
Partnered play makes even more sense
The automated design lends itself particularly well to BDSM and partnered play. With an ordinary enema bag, somebody still needs to physically control the equipment, but here, once everything is positioned correctly, the machine handles the pumping and frees your partner to concentrate on you instead.
There’s also something psychologically effective about surrendering control over something your body instinctively wants to stop. Watching the volume climb while knowing you’re temporarily unable to simply expel it adds considerably to the experience, particularly if someone else is controlling the machine.
Obviously, this is also where sensible limits become particularly important. “More” is not automatically “better” when you’re introducing liquid into your colon.
The app is mostly essential
The app is currently available on Android through Google Play, but although YokoNex links to an iOS version, I wasn’t able to download it from the UK App Store during testing. They tell me that’s a known issue, and my guess is that it’s fallen foul of some kind of ludicrous compliance requirement. Whatever the reason, it’s frustrating because this is exactly the sort of product where hardware controls should provide a usable fallback.
The app offers both remote control and a timed play mode, where you can set up a sequence of events, but in both cases I think there’s a feedback problem. Unless you’re very meticulous about testing the limits of inflation beforehand, you may end up veering into dangerous territory. The device does in fact include a pressure gauge, so in theory it should be possible to set a hard limit there, too, but it doesn’t exist in the current iteration.
That’s less of a concern with a set amount of enema solution, because you obviously have a hard limit in the amount of liquid you put in to begin with. With the inflation bulb, though, I wouldn’t automate that part. There’s simply too much potential to overdo it if you don’t already know exactly what a given inflation setting will produce.
While there are no on-device controls and the YokoNex app offers the most comprehensive way to control your enema with adjustable flow rates for both inflation and pumping, there is a simple remote control included in the box. It charges over USB-C (same as the main unit, so no messing around with small batteries), and to pair just hold down the circle power button. Once pairewd, pressing the circle buttons starts and stops the enema pump, while the plus starts and stops inflation, and the minus button immediately deflates. Again, it’s a very basic remote but does mean at least that the app isn’t completely essential — you can still enjoy this if your phone is dead.
The water measurement needs calibration
The other obvious weak point I found was the liquid-volume measurement. After completely draining a measured 500ml jug during testing, the app reported that only around 350ml had been dispensed, which is a pretty substantial discrepancy. The next time I tried, I reached 600ml with the same volume — that was at full speed throughout; the speed definitely plays a part, with lower speeds being less accurate, it seems.
I wouldn’t personally rely on the displayed figure as an accurate measurement of how much you’ve actually taken. A user calibration system might solve this quite neatly, perhaps by asking you to measure 100ml into a container, begin calibration, and stop the machine once that known volume has been pumped.
As it stands, I’d measure the amount of water you intend to use beforehand and treat the app’s volume figure as an estimate. The developers are aware of the issue, and their response was that it’s a known problem, but they’re currently focused on version 2.0 of the app before trying to implement a calibration routine.
The intake tube needs some weight
This is a minor gripe, but there’s also a wonderfully low-tech flaw in this otherwise extremely technological enema machine: the intake tube doesn’t really want to stay where you put it. It’s quite a floppy thing, and if you’re squirming around, there’s every chance it’ll escape the liquid vessel.
A weighted filter head would make an enormous difference, because without one the tube can move around inside your container rather than remaining submerged at the lowest point. Weighted tube ends are inexpensive and readily available, so fixing this yourself isn’t difficult, but for a machine selling for around $179, this shouldn’t really be an optional five-dollar improvement.
Safety first
I need to add this because enemas are one area where experimentation is a very bad idea. An enema allows substances to come into contact with tissue that can absorb them rapidly, and inappropriate liquids can irritate or injure the rectum and colon. Alcohol, coffee, soaps, cleaning products and whatever other cursed potion somebody on the internet recommends do not belong up there.
Medical guidance also warns against excessive liquid volume, incorrect temperatures and frequent enema use. Potential complications include rectal or colon injury, infection, dehydration and electrolyte disturbances.
For recreational use, I would stick to an appropriate warm-water or saline solution and use conservative volumes rather than trying to discover your personal high score. If something hurts sharply rather than simply feeling full or uncomfortable, stop.
It’s also worth stressing that regular large-volume colon cleansing isn’t medically recommended as a health or cleansing practice. This is a toy for occasional experimentation, not something your digestive system needs as part of a weekly maintenance routine.
Verdict
The YokoNex Automatic Enema Machine has some obvious first-generation rough edges. The app availability problems I encountered on iOS in the UK are frustrating, the water-volume sensor wasn’t accurate during my testing, and the intake tube desperately needs a weighted end. But software can be improved in time.
None of that changes the fact that the fundamental experience is fantastic. The automated pumping is convenient and a gloriously fun way to torture and tease your sub, but it’s the inflatable retention bulb that transforms this from an unnecessarily elaborate douche into something more special.
It creates an incredible sensation of increasing fullness while preventing immediate release, followed by an explosive loss of control when it finally deflates. Alternatively, you can allow some light relief through the built-in outlet valve if you want more control over the evacuation process. Personally, I like to set a timer, then put the phone out of reach so I don’t know when it’s gonna hit.
It’s intense and far more fun than I expected an enema machine to be.
Just make sure you’re somewhere that can survive the consequences when it lets go.
Pros
- Basic remote included
- Fantastic feeling of gradually increasing fullness
- Inflatable retention bulb completely changes the experience
- Automatic pumping makes extended sessions much easier
- Particularly well suited to partner and BDSM play
- Adjustable control through the app
Cons
- iOS availability appears unreliable depending on region
- Liquid-volume measurement was inaccurate in my testing
- Intake tube should include a weighted end
- Definitely not a device for careless experimentation