TRy some plain unflavored yogurt. If you can get some Acidophilus Pearls (by Enzymatic Therapy...some Walmart stores carry it) and hide them in soft food or tuna that'll help too. Make sure they're getting enough water and don't give them any milk. The yogurt is OK because it contains the good bacteria the intestines need to properly process food. If they seem to be getting dehydrated give them some unflavored Pedialyte. They probably won't drink it 'straight' so mix it in with their water.You can also try cooking some ground beef or ground chicken with rice. That helps too.

Sorry this might sound stupid but what is Acidophilus Pearls. I will be going to Walmart tomorrow, what section do you find this in? They are all drinking water, they have always drank lots of water. If I don't find it at Walmart where esle can you find it and how much would you give them? Sorry with all the questions I just want to help them feel better. I will try the yogurt. Thanks for your help.

Acidophilus pearls are what Enymatic Therapy calls this version of acidophilus. Acidophilus is one of the strains of good bacteria the body needs (human and animal) to process food properly. Without it you get diarrhea and other problems. Look for it in the Pharmacy department, usually where the herbs and vitamins are. If it's not there try the digestive stuff is (pepto-bismol etc. BTW do NOT give them pepto bismol! It can kill them...they probably won't touch it anyway). The pearls are small and white and easy to hide in food for cats. Regular acidophilus is harder to get into them. Since these are feral cats I figure the pearls would work better. They're easier to disguise.
If you can't get them at Walmart try a health food store or natural foods market (like Whole Foods). Some pharmacies like CVS have them too. If you strike out in all those places try Vitacost.com. They have everything under the sun at about half off retail prices and they have great customer service. In the mean time the yogurt is the place to start.
Don't worry about the questions. That's how we learn is by asking questions. I'm just sorry I didn't get back to you last night. I logged off shortly after writing.

Oh BTW; give them a couple of pearls twice a day. Morning and evening if you can. You'll see a difference in a couple of days.

Thanks for all your help. I will look at Walmart today and if I can't find it, I will start with the yogurt. They are all still eating and drinking well. They have always had very soft stools and I know it's probably because I can't afford the best food for them. It seemed to have gotten worse when I started feeding them wet food mixed in with the dry several months back. All I know is it isn't like my indoor cat Peaches who has always had very firm stools. She eats the same dry food but different wet food. Two of my feral kitties is worse right now and that's why I was seeking help.

No need to explain. The fact that you want to help is enough. We all want the best for our kitties.

Ok, I tried the yogurt but they won't eat it. They are trying to cover it up. I didn't know what kind of plain yogurt was better or if it made a difference. I bought plain greek yogurt, they won't touch it, not even the ones who I'm not worried about. Well, with the exception of this fat cat I feed. She is out there eating it as she will eat anything. Do you have any ideas on how to get them to eat the yogurt or did I buy the wrong kind?

The fat kitty who ate the yogurt just threw up on my porch. I don't think I want to try and force the two kitties to eat it as I don't want them throwing up too. I will try something else. It's a good thing my dog likes yogurt, I'll feed it to her.

Greek yogurt is probably too strong. Try some generic grocery store type. Stoneyfields is pretty good. When I worked at the health food store we had a number of people coming in for their plain yogurt for their cats.
Might try and mix tuna juice with it. You know juice from a can of tuna. That should attract them.
As for the fat cat, he might have eaten it too fast. My oldest does that sometimes. eats too fast and promptly throws up. I wouldn't be too concerned about that. As I said greek yogurt is pretty strong.
You could try the cooked ground beef (or chicken or turkey) with plain rice instead.

Thanks for all your help. My dog had the yogurt mixed with her food and loved it. The two kitties are still eating and drinking water but still have diarrhea today and one is passing a lot of gas.

I don't know if this helps, but a broader term for what you're looking for is probiotics. Acidophilus is just a specific type, the most common and the best for animals. They shouldn't be chewable tablets, because the organisms won't "live" passed the mouth. It should come in powder form, inside of capsules. That makes it easy to mix it with food or water. I occasionally mix it with my cat's wet food as a supplement. Another common probiotic that's in with acidophilus is Lactobacillus, and bacillus. For dosing, it of course depends on which brand you buy, as you can get human or pet grade probiotics (they're all the same bacteria). The only difference is the amount of millions of billions of microorganisms. So, it's pretty hard to overdose, especially cause most of that bacteria could be dead. But I'd start by giving about half of whatever is recommended by the maker. If it's a human probiotic, then measure by pounds (so a teeny bit).

I don't know if they still sell it or not, but years back when I had fosters, my diarrhea lifesaver was this tube of stuff called Bene-Bac. It's made by the company KMR. They're inexpensive little tubes of bacteria, I think five to a pack for like $3, that basically served as probiotics. It's claim was to be similar to the natural bacteria the mother gives to her kittens, to help jumpstart their immune systems.

If you're desperate and can't find any of this, there foods that have natural probiotics, like yogurts and leafy greens, but they tend to give kitties gas. (Well in my experience). You can look into plant enyzmes, they come in capsules too, or glutamine, same thing, but read more about them I just know of them not much about whether or not they are as effective.

Good luck!