Hi again Dorothy,
Yes, I have all of the natural pet care books. One you may not have heard of is Food Pets Die For. by Ann Martin. After reading this book, I threw away all of the "garbage" food that I had fed my cats. You have to read this book!!! Don't buy anything that Only Natural Pet doesn't sell!!!! Everything else is poison and will kill your cat.
Try the "Tract Ease" and also the herbal product for constipation ("Lax" something; it looks just like the Tract Ease) Both of these solved my cats' urinary and constipation problems. There is also a good natural product for removing hairballs that comes in a tube.
For your finicky eater, try the Tiki Cat canned food. These are small cans of different kinds of fish that you can add to their regular food. My cats practically jump into the can when I open these. If your cats like fish, they will go crazy over Tiki Cat. I use a little bit mixed in with their other food once a week. For constipation, I comb my cats daily to eliminate hairballs and I also add small amounts of organic flax oil, organic coconut oil, organic olive oil, organic hemp oil, pumpkin or sweet potatoes, and raw bran to their food. I also add the Only Natural brands of probiotics and plant enzymes.
If you call OnlyNaturalPet (toll free), they can also advise you. By the way, they told me NOT to buy Pet Promise. Only Natural Pet researchs everything they sell and they sent me information about Pet Promise. They advised me not to buy it. I had purchased some of this a while ago and stopped buying it after reading the information. I often call Only Natural Pet to ask for advice: they are the best pet supply company on the Internet and I trust them completely.
Recently, all four of my cats got sick at the same time, just like yours did! They had always been healthy, but as soon as I let them go outside, they got sick. They probably got into pesticides/chemicals or who knows what! This was around the time that the weather got hot in the spring, so the cats were shedding a lot; I thought the problem might be due to hairballs. They stopped eating, urinated all over my basement rug, became constipated, and were lethargic. It was a nightmare! I made 5 trips to the animal hospital in less than 2 weeks. After spending about $7000 on hospital bills and new flooring, they seem to be okay now. I watch them constantly and don't let them go outside anymore.
It sounds like you need to take your cat to the vet or an animal hospital if you haven't done so already. When a cat stops eating and/or throws up constantly, there is a serious problem. I wouldn't wait.
Here is my email address: parkerpl@verizon.net if you want to email me. Don't forget to call Only Natural Pet for advice.
Good luck!
Phyllis