Where is the cheapest place to buy cat food and cat litter?

So, we seem to have another cat. I'm not really sure why. It decided it wanted to live with us, and who am I to say no?

The cat is pretty cool. Apparently the things have no short-term memory, so they do things like flinging themselves up on the windowsill in horror and amazement every time a car drives by. Or repeatedly trying to jump up on things that are too high or trying to run under something that's too low. And of course being absolutely stunned. Every time.

It's possible we got a dumb cat.

Either way though, bitches gotta eat, and that goes for feline ones too.

So, food for this thing. The cat will eat wet food and dry food. The vet says that it's best to give both, since the less-processed food is better for organ and digestive health, and the kibble is good for their teeth.

Here are the best deals on canned food I've found so far:

This 24-pack of 5.5-ounce cans at Amazon is $9.49 with free prime next-day delivery. That comes out to about 7 cents per ounce.

Edit: Make sure you are shopping at Amazon through Swagbucks, so you can get points for every dollar you spend.

Dollar Tree has 13-ounce cans of Friskies for $1.00, which is also about 7 cents an ounce.

Dollar Tree is also probably the best source for pet toys, bowls, brushes, cat pee cleaner, and so forth. They seem to be decent quality. I would probably avoid the toys though if you have a dog or cat who chews toys to the point that pieces come off and they could swallow them; the pet stores make expensive chew-proof ones for pets who do this.

Now, for dry food:

Dollar Tree has 14-ounce bags of dry food for a dollar. I haven't bought any, and I'm a bit hesitant because it's an off brand. I wouldn't normally care about this for human food, which is highly regulated, but pet food doesn't seem to be, and I've heard horror stories. If anyone has more information about this food producer, I might consider it. (Some Dollar Tree products are actually reputable brands repackaged.)

So, moving on to a little more pricey. If your cat isn't picky, it's possible to get cheap food by buying whatever brand is on sale and has a coupon. Purina often has coupons available on the coupon sites. They often run one that's a dollar off any size bag, and they make a small bag that's $3 or so. The coupons will print two times per computer, and you can follow the various coupon matchup sites to see who has it on sale, and then you can often get the bags for a dollar or two.

Purina has an online pyramid scheme, which was previously getting me a free huge bag every 6-8 weeks, but apparently people were reproducing the coupons, so they're physically mailing the bag of cat food and it requires a lot more points to earn. Still might be worth it for free stuff.

If you're really in a bind, Reddit has a "Random Acts of Pet Food" forum where you can explain your need and people will help you out. Like any of the "Random Acts" pages, it's not meant to be sustainable and is intended to just use once when you run into an actual emergency. Please don't take advantage of these pages, as they're such a great thing for the people who participate and I would hate to see them so overrun by scammers that people stop donating.

EDIT: I should include cat litter too, huh? This is the cheapest clumping litter I've found. It's $13.28 for 40 pounds with free prime shipping. Dollar Tree usually has bags of clay litter for, well, a dollar, but my cat* seems to only use the sand-type litter and will use the couch if said litter is not provided in at least one litter box, because apparently this cat doesn't support using coupons and finding sales.

*The other cat**, not this new one

**I may need to call them The Asshole Cat and The Dumb Cat or something to differentiate