As a cat fanatic I was most delighted to receive these as the daily free gift with my order (thanks YesStyle!). I honestly don't want to use them because they look so cute, but I have to sacrifice one so I can update this on their longer term usability.
Comparing them with the sponges I currently use, these feel hardier and I can already tell they will outlast my current dishwashing sponges. I love how they have the scourer side and softer side like my regular sponge, and they aren't much thinner in comparison but are certainly larger surface wise.
As others have noted, the eyes and mouth holes are great for cleaning items like chopsticks and skewers etc. I believe these would actually be useful for cleaning the bathroom/laundry etc also as they seem quite heavy duty. I'm very impressed with the quality and will be buying more soon so I never run out. They look so much nicer than a plain old rectangular sponge. Cats>everything else!