too small grains for a big beak
930585
im happy about everything except size of the seeds, but thats not only this brand issue but most of them, will be nice if any of bird food producer will try by themselves feed a Macaw with tiny grain, more then half of the bag ends up on the floor because my birds huge beak cant or won't deal with little grains
277636
I have zebra finches and I feel these cups are too small for them.  They only hold about a tablespoon of food and they are too small for the lift doors on the front of my cage.  I received them quickly and they seem to be good quality.
297177
Might be better suited for small eggs.  Large and extra large eggs are a no go with this product.
4202917
The medium grain looks larger than I expected. Not usable for every day cooking without grinding the crystals. Please be aware of it when Ordering.
481337
it is too small for the hole the critters put in my birdhouse. not their fault. I need a larger sized piece.
3356965
Very large grain.  I was surprised at how large the grains are.  I was hoping for power or close to it.  Of all the alum I've purchased these are by far the largest.  If not for the grain size I would have given it four stars.
4693842
I like these marrow bone style Nylabones quite a bit. My one wish is that there was an intermediate size. The small is too small, and the large is for large carnivorous dinosaurs like a T-Rex or Velociraptor, or similar. The large size is way too big for my American Staffordshires. The small is an obstruction hazard. It's almost the right size for my 30lb McNab, but still a bit on the small size.

If I could get these in other sizes more suitable for my dogs, these would be really great. I had hoped that I could stuff and freeze these, but the large is far too large for that. The small is pointless for my crew. So that is a disappointment to me.

With that said, if the sizing works for your dog, these would make a great substitute for real marrow bones and the propensity of those to break into shards, break teeth, etc.

If you haven't looked at these first hand in a pet store before buying, I would recommend that. It will give you a better idea of the true sizing of these. I found that even with the dimensions of the product, I didn't really have a good handle on the size until I saw them. It's helpful.

As much as I dislike the idea of my dogs consuming bits of Nylabone before I catch them at it, given the alternatives of bone shards (my dogs break pieces off marrow bones) and tooth breakage, these are a good trade off over natural bones. At least for my crew.
4239493
The pellets are actually much larger than I thought and do not fit in my tetras' or my danios' mouths. I have to feed them flakes and crush these up for them. My pearl gourami and Bolivian ram can eat them but not easily. They usually spit them out a few times. The quality is great though, as always, from Omega One and once they're crushed up, the fish love them.
692612
This unit only works with large items. round ones that fill the feeding tube and slide in. Even so if two or more are fed into the chamber they will likely drop into the lower tube and jam in the slider. I have modified my system to only allow one piece in at a time. Now I can fill the upper chamber and it works flawlessly. Unfortunately these foraging systems are all poorly designed and all need modification to work.
They are all OK but they will not work well, unless modified. Trust me I have a number of different ones and they all need modifications.
The lower "vertical sliding section" sometimes does not slide too well and there is only a limited gap for the food item to drop out. If the slider moves all the way down, the food stays in the feeder. Changing the spring tension to suit your bird size helps. A further modification in this section also fixes the overall problem. If you want details on the modifications, you could try and contact me through AMAZON I am sure they know who I am. G.H.
892624
This food was a bit too small for my Cichlids and it sank very quickly. I couldn't get them to eat fast enough, even just putting few pellets in at a time. Had to buy another, larger non-sinking food.
3301492
This item works as described, but the "small" size is more suitable for a medium-sized bird, such as a cockatiel or larger. The perch is too thick to be comfortable for my parrotlet.
4293665
We kept having trouble with the 2 minute timer. The grains kept getting stuck. I think these would work better if the grains were smaller, but they'll do the job...if you're paying attention to them and flick them a couple times if they get stuck.
1399892
Did not dispense enough food for my lab.  When I was checking for a clog...I was replacing the top canister back on to snap side lock and one of the sidelocks broke.  Yes, I was using small bites of dog food.  Probably a good feeder for a small dog.  Needs to be more durable if it is to last longer than a couple of weeks.  I am still looking for one that can accommodate a large dog, to feed over a weekend.
3638232
While this was not flat out rejected by my large flocks of Goldfinches and Lesser goldfinches, compared to special finch mixes comprised of the same ingredients, it falls a little short. Actually, it literally falls out of the feeder too much: In this case the chips and seeds are too small and fall right through even straight tube thistle feeders.
203299
Screen openings are only good for nyger type feed.  The mixed finch seeds do not easily pass through.
1107254
This bird feeder is fine, but just too small in length to attract the many large woodpeckers that live around here. I guess I'll have to spring for a longer size, if I can find one In Droll Yankee. BTW, this is the only brand I buy.
4839180
Not happy. Approximately 90% millet and useless seeds in my opinion.  If anyone orders this for their birds I would take it and dilute it very well in a good quality bird food. I mean 1 part of this product to 4 parts of a good premium brand.  I cannot feed this to my birds on it's own for two reasons. 1.  It does not have enough pellets or other grains. Approximately 10 percent of this mix is comprised of food I want my birds to eat.  2. The seed is very dusty and contaminate with too much dusty powder.  I have no idea what it is.  It has a very small amount of safflower seed and i prefer more safflower seeds.