fairly easy to refill
591970
Fits just right on the 'milk shelf', fairly easy to refill.
4694944
this is great.  I have had several others but I like the fact it's easy to refill without over flowing into next cylinder.  looks good too.
3923448
Awesome little device, refill at your own time, no need to keep purchasing more and more cartridges. just a little small chamber, but I am happy with this guy.
3597160
i LIKE THE ADJUSTABLE HOLES AND THE BOTTLES ARE RELATIVELY EASY TO FILL  NOTHING NEGATIVE.  WILL PROBABLY BUY MORE LATER ON.
3448879
I love being able to refill the old cartridge.  It saves lots of money and is very easy to do.
1046144
Smooth writing nibs create a very fine line. Easy to fill. Unfortunately one of the refill cartridges did not have the seal at the bottom, not a big issue.
3886321
I was pleased with this order.  The refills worked well with the pen and were easy to manage.  The color was beautiful.
1983255
Works well as designed. Very handy to refill from the top of the unit.
2932873
Works well.  Refills easy to use.  Like having them in a porous sack, less messy than just the loose "salt" you pour into these type of dehumidifiers.
4436309
Best price I can find on the refills without having to buy 6 at a time, which really isn't in my budget.
1781576
Easy to refill and holds large volume.  Grinds a large volume quickly.  Occasional problem with the refill door coming open during use.
2440749
Giving it four stars mainly for the price, as there isn't much comment on the refill canister itself.  After first purchasing the whole unit, I did not know that the refill's were available on amazon, and wound up paying over $12 bucks at the pet store where I bought the unit.  Still could be cheaper I'm sure, but  much better than paying almost twice I paid for the first refill.

See my review of the SSSCAT Cat Training Aid product for how well the unit actually works.
2801962
These bottles were purchased primarily for a music festival we recently attended. I wanted something lightweight and easy to refill that wasn't plastic. It's even more convenient than most bottles since it folds up so small, and I do expect to get plenty of future use out of it. The actual dispenser of liquid is a very small opening so it's maybe not effective for chugging large quantities at a time, but you really shouldn't drink water that way anyhow. And if you need to you can always take the cap off and drink straight from the bottle.
I also appreciate how easy it is to keep clean. Not a fan of bottles with built in straws because I never feel I've gotten them thoroughly clean.
364169
Economical way to refill the dispenser, instead of throwing away the dispenser after only one use.
4900560
Easy refill for my mechanical pencils.  It would be nice if these packs would include the circular eraser inserts- those seem annoyingly hard to find.
3329224
Easy pour and refill. Quit dealing with torn bags and stale cereal.  I have 6 of these.
4305347
My four year old loves this. It is easy for them to refill on their own and easy to use.