I have three of these
I have three of these. Two bought from Amazon one from clawsible. The one from clawsible was short of some hardware. I got no response from them. I had go through PayPal to get a response. It took a month total to get replacement hardware. The cats seem to use them ok. However they are not completely waterproof. If it rains water builds underneath the top layer of canvas. I put thin fleece throws in them for comfort for the cats. They are always damp from the rain. There is always a musty smell. If you open the lid after a rain water pours out of the back. All three do the same thing. It's not cat pee. I've had these for over two years and the cats do use them. It would be a much better product if they were completely water repellent. You have to constantly clean them to prevent mildew. Use them in a covered area of cover with a tarp. The cats do seem to like them in dry weather.
