It stops sucking, fast, and that's when frustration sets in.
936236
I've owned one of his two-teat milkers for a year or so, but didn't use it until about a month ago as the cow went dry and the goats hadn't come into milk yet.  Now that the goats are in milk, I need to use it a LOT!  The teat cups work well, for all that they're syringes, but I think I'll go get some smaller syringes and swap them out to see how they work.  Using syringes is kind of ingenious, actually.  The problem is with the battery-suction device.

I have a goat who will give me a gallon of milk a day, but right now, I'm only getting a half gallon.  Why?  Because that's as long as the Dansha battery-suction device will last.  It wheezes and gasps through the second quart.  It's very frustrating. Do you know how much milk I'm getting from my other four goats?  None.  Because the battery is dead.  (and the goats step in the bucket when I hand-milk.)  I'm trying to find a different, reasonable suction source, but am not having much luck so far.

There's a secondary problem when the battery is on it's way to dying.  You'll press the button, hear the mechanism inside *start* to try and run, but then it won't.  So you sit there, pressing on the button hoping it'll start up again, watching the dribble of milk slow, pressing and pressing, hoping it'll start up - and sometimes it does, so you keep going because who knows when it'll stop and not re-start again.  Ah, the excitement of partially milking one of the goats...

(Believe it or not, I've just ordered another unit of his just to get a new battery-suction unit to keep the goat in milk to give me time to find something better (I've given up on my other goats milk, as his battery unit just won't last longer than for one goat.)  I really wish there was something out there that would let me do 4 or 5 goats without dying!  Frustrating!  Just THINK of all the lost cheese!)
4788822
Doesn't deal properly to maintain pressure. It's small and worked well first few times, but the seal goes to crap real quick and it doesn't work well at all
3440638
We have owned this vacuum for over five years, and have gone from mild dislike to hatred. It's awkward to move around and has a short cord. But what really steams me is something got clogged in the hose (remember, it says "others clog, our's don't" right on the vacuum)and there is no way to get it out because of the design of the hose. You can't run a broomstick or dowell down it, because of angles, and you can't remove the pieces.  It is going to cost me $100+ to have it fixed. I suppose I will instead cut the hose and fix it with electrical tape, but that isn't ideal because an electric line runs through the hose to power the head.
2537180
I had one of these for a little while. It was a gift. Maybe the people secretly hated me? Hell if I know, but I managed to kill it in under a month. This isn't my first time at the ice cream rodeo, so my issue wasn't user related. (I've been using a Cuisinart that was made before Cuisinart started sucking hard. Remember when "buy it for life" was a thing?) It started out alright in the beginning, but that didn't last long. We got about two to three uses out of it before it crapped the bed with issues. Eventually, it just became unusable.

Most of the problems stem from the motor. It's cheap, underpowered. The engineer who OK'd this should probably consider a change in careers. For starters, it's loud. Annoyingly loud. It puts my Kitchen Aid to shame and rivals my blender. (Only instead of running for a few seconds, it runs for 30 - 45 minutes.) Sure the first couple of times it's not too bad, but it seems to become noisier. After a few uses, the motor REALLY struggles once the ice cream becomes viscous. It makes this click noise when the mixer has to change directions because it thinks it's blocked. (It's not blocked. It's just awful at its job.)

The motor problems eventually got to the point where it would consistently stop at about 75% the way through. I don't mean I would pull the plug and say it was done. I mean the machine would no longer spin its sad little churner at that point because the motor couldn't take it. "Ice cream" that had the consistency of melty not-quite-done soft-serve, and this thing couldn't do it. And hey! Since I'm on crappy soft serve, know that the bucket doesn't stay cold enough long enough to compensate for the atrocity that is the mixing mechanism on this machine.

I suppose if you're looking for a thoughtless wedding gift that you know MIGHT get used once or twice within the next millennium, then this is for you. Or hey, maybe you're the kind of person who really likes soupy ice cream. If not, you're better off just buying ice cream at the grocery store. Don't waste your money on this thing. Quantitatively, you'll be able to buy more Ben and Jerry's with the money you save by not buying this than this machine will ever be able to churn out for you.
2208800
Runs slow, out of no where it will Start making this awful noise, and there's nothing we can do about it until it stops.
1072037
They spray for awhile then you have to fight with it to continue to spray. Very frustrating.
3340776
I've had this product in my shower for about two years now. I think you get what you pay for--this is cheap, and it sort of does its job. I still need to snake the drain about once every four-six months. As other reviewers have said, it catches MOST errant hair, but not ALL, so it doesn't completely prevent clogs, but it does lengthen the time between uncloggings.

Besides mediocre performance, my other complaint is how quickly the product discolors and loses suction. I am a bit of a clean freak, and I clean the drain protector about once a week. By clean, I don't mean just remove the hair. I mean I soak the drain protector in the sink with some kind of cleaning solution for at least 15min. I've tried several cleaning solutions, and none seem to de-gunk the protector of oil residue from deep conditioners and the like, which is frustrating, but more frustrating is that no matter what cleaner you use, the protector hardens over time so that the suction cups no longer work, rendering the product dysfunctional. But again, this process does take about two years. So, don't expect a miracle clog preventer, but this product is also not a complete waste of money.
4040230
If this review were based on the first week, it would have gotten 5 stars.  The noise is not too bad. Of course the Shark is somewhat loud.  This is the nature of vacuums, especially small hand held units.  Fortunately, it does not have the high pitched whine of the one it was replacing, which used to drive me bonkers.  And it was quite powerful, with quite an admirable sucking power. Moreover, the overall unit design is pretty funky looking. Unfortunately, the battery did not last long between charges.  And what is much worse, its performance rapidly degraded, so that a year later, it barely holds a charge good for a few seconds of vacuuming.  If this unit had been used daily, you might expect such a loss of battery power.  This was not the case as it was used only once a week or so.  Because of this, and there is no easy way to get a replacement battery, I would recommend to avoid this vacuum until they improve battery performance.
973530
vaccum begins out great, but after time..  the suction gets diminished, no matter how well you maintain.
2655228
Water stops flowing every time, requiring the filter be removed and shacked again and again and again...Time to move on to a brand that works.
3336330
This product worked wonderfully at first. But, after very little use, it suddenly stopped working. This thing has been used less than 10 times. Now it will vacuum but not seal. OR it will not vacuum but seal the bag. Either way, it seems to have stopped vacuuming AND sealing.

This is the fist vacuum sealer I've had. Based on this limited use, I know that I want another one. BUt I won't be buying this one. Just goes to show, you get what you pay for.
4537461
after having it for only a few months, it began to get extremely nasty and the filters are too difficult to clean.
946683
They work well, when they work!  We've had 2/6 already stop working after just a few uses. With the hard straw in the correct position and the more flexible straw in the correct place, you just suck air. The other problem is the hard straw that you open and close tends to pop off all the tops. They snap back in... but it makes my 3 year old frustrated
1852586
(Quiet angry sigh) well at first it was good .. It sucked real good. Now? It just sucks. Quit working after 4 months.  Would rather fix it then adding to my dirty foot print.
4898780
I bought this vacuum 6 months ago, when I first got it I was excited because it was small, lightweight, and helped to make my life easier. This vacuum gets used 2-4 times a day, so it's well used. Now, it gets the mess up and does it's job as I need it to, however, it has its issues. To start, there's an easy skinny nozzle that comes with it, which is great, but the is no where on the vacuum to store it, so I have since lost it. Next, over time the little flap inside the canister warps, causing everything you just vacuumed up to fall out. Finally, also over time, the main attachment that comes with it wears down where it attaches causing it to fall out all the time. I most likely will not buy this again, and look for something else a little more durable.
2771162
Alright, the thing eats leaves and twigs that are dry. It also loves dirt and bark, which is a problem if the leaves are wet.

The dirt quickly turns to mud and cakes around the impeller. The suction dies and you are tasked with unplugging it with a stick or a screwdriver.

I'd still buy it again, but I try and only use it when everything is dry.
2179456
I bought this to replace a Eureka "pet" vacuum that broke in the first month. I didn't really notice that it has the swivel steering until after I got it opened up. On first use, it does have great sucking power. It really picks up everything, and it's pretty easy to maneuver, despite the fact that it's a little heavy. The swivel steering is a little weird to get used to. My biggest complaint is that the dirt collection cup really doesn't hold very much at all. We were vacuuming up fir needles after removing our Christmas tree, when we noticed that it wasn't picking up needles anymore. The cup had become full enough that the contents were just stuck inside (not spinning), and the suction had stopped pulling needles all the way into the cup. As a result of the loss of suction, the needles were jammed up inside the internal hose for several inches. We found that by lifting the vacuum off of the base, we could access the clogged area and pull the needles out with our fingers. What a pain. Now I have to watch the dirt cup closely while I vacuum to make sure the dirt is still spinning. Once it starts to stick, I have to stop and empty the cup - usually before I'm done vacuuming the room. That said, it does suck up stuff really well, especially pet hair, which is why I bought it.