Why wont they use the litterbox

Stop hoarding pussy.

You go in there for a few days to show them how it works. See if that works and report back. 🤭

Cats are smell oriented. They know it's not their box. So you are violating their first primal instinct by having only one box.

Heck my cat doesn't even want other cats in the house. That's violating their instinct.

Every time another cat has come into the house and leaves she smells where they were.

They rub against things to mark their territory. They do the same with people. Your cats believe they own you.

Try getting more than one litter box?

Put 6 boxes around the house. The rule of thumb is to have one more box than cats. Also, experiment with kinds of litter. They may dislike the texture.

Well my cat is like that, just does so the litter box when he feels like it and most of the time he does it on the floor. It's very random for him.

How many boxes do you have? You need at least one per cat in the house but we have 2 extras, just in case.

Can I see a photo of the kittens ? 🙏

Get a dog...

Some cats won’t share litter boxes with other cats. I had one like that, used one just fine that the other cat didn’t use. Brought a third cat in the house and he stopped using it.

But the kittens are the only ones who won't use the litterboxes.. have never had this problem before and have had many cats that had kittens and the kitten would use the litter box

My cat is 2 years old - and he still needs to be placed in the litter tray.

He will use it once he is there, but he doesn't always seek them out to use them...

Put the cat in the litter box and demonstrate how to use the litter box with their paws. You may want to look into buying training pads.

I'd find new homes for at least 3 of them and get new boxes for the two you keep.

Perhaps you ought consider having the female cat spayed, and the males neutered.

Put them outside. I have had a cat that refuse to use a litter box

Ask Andrew, I love cats, but he has all the answers whiz kid.

Those sound like good candidates for barn cats

Go cats! Bird killers unite!

How clean are the trays?

Trade them in for a dog.