So sorry for your loss. That is very kind of you to try and donate your extra supplies. I would call and ask, and it's a great place to cuddle with kittens if you need to.
Absolutely, they would love to have it. I've donated opened bags of food that my kitties just didn't like and they will accept anything. They have a wish list of items they need and food & litter are at the top, they also need other stuff like paper towels, etc. So definitely take them in. :3
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