My cats managed to tear it up
It's a decent bag, and holds the smells inside really well, but after 6 months my two cats managed to tear a hole in the side of the bag :( So it might be dog-proof, but it's definitely not completely cat claw proof.
Good, but greasy
We have two Trixie food bags, both sizes and they are great, however they have started getting really greasy underneath and there are food oils coming through the material. It is getting all over the floor and our hands when we open them. Also the smaller bag there is no way it is 10kg storage, we tried putting in a 10kg bag of royal canin cat food and couldn't fit it all. The big bag for 25kg holds 15kg puppy food with plenty space left but not sure another 10 would get in.
Nice quality but too collapsible
This is made of nice, tough material and is fully lined. I bought it for chicken feed, so I'm not worried about potential leakage, but I did expect it to be a bit sturdier. It's not pop-up or stiff, which means that it's a bit collapsible if it isn't filled right to the top - not so good when you're trying to avoid spilling chicken treat all over the floor!