To prevent cats from urinating everywhere in the house and making a mess, the common practice is to provide them with a litter box. However, cats are not born knowing how to use a litter box and require training from their owners. This can be difficult for cats that are used to urinating anywhere. Therefore, owners should consider their options before choosing a litter box. 
1. Choose a large litter box.
While kittens can squeeze into very small boxes, they grow so fast that you'll need to replace them frequently. If you do need to replace the box, you'll have to retrain the kitten, so it's best to start with a box that will last a long time. Kittens can squeeze into larger boxes as long as one side is low enough for them to reach. If you find a particularly large box and are unsure if your kitten can fit, you can create a ramp using a piece of plywood or other traction material. Attach it to one side of the box with duct tape and remove it once the kitten is large enough.
2. Consider using a closed litter box.
Some litter boxes have enclosed sides or tops. This type of litter box has two advantages: firstly, it prevents litter from spilling or leaking after the cat digs in the litter box; secondly, it isolates odors. Some cats also feel safer with enclosed litter boxes.
Make sure the enclosed litter box is large enough for your cat to feel comfortable enough to turn around in. Most cats will sniff their waste and bury it after defecating, so the litter box needs to provide enough space for them to do this. Some cats may initially resist an enclosed litter box. You can try removing the box door to help them adjust to the litter box during the transition.
Of course, you can also consider emerging smart litter boxes, such as Tailio. Tailio is not just a cat toilet, but also a daily monitoring system for your cat. The Tailio platform can be placed under a standard litter box and can collect a lot of relevant data, such as when your cat uses the litter box, its weight, and the weight of its excrement. If you want more in-depth data, the accompanying mobile app can remind you if your cat needs veterinary care. If the Tailio platform shows an abnormal increase in weight, it will issue a warning to the cat owner. Furthermore, for more careless owners, they can use the app to remind themselves to clean the litter box promptly.
III. Buying cat litter
There are many types of cat litter available on the market, generally suitable for young or adult cats (8 months and older). Try to choose dust-free litter to avoid dust irritating your cat's lungs. When choosing cat litter, you can refer to the following points: Use unscented litter whenever possible. Both kittens and adult cats may not like scented litter. If the odor is too strong, they will consider using a different litter box.
Additionally, some scents can irritate a cat's nose and eyes, and cause respiratory problems. Consider using scoopable cat litter, as it makes cleaning up after your cat much easier. Note that cats may ingest this type of litter and become ill, but no such cases have been reported so far.
Choose a common, readily available cat litter. Some cats become accustomed to using a particular type of litter. If you change the type or brand of litter, they may not recognize it or use that litter box.
4. Buy a shovel and a sheet.
To train your kitten to use the litter box, you'll need to buy a scoop to clean up its droppings and place a sheet under the litter box to prevent litter from spilling and making a mess of your room.
5. Training your cat to use the litter box
1. Prepare the litter box before bringing the kitten home. As soon as you enter the house, hold the kitten and let it scratch the litter box with its paws. A smart kitten will understand what you mean at a glance.
2. Of course, some kittens simply won't pay attention to what you're doing, and will still relieve themselves anywhere even after being trained. In this case, you need to discipline them. You must be firm and serious in your reprimand, letting them know you're unhappy. It's said that cats have poor memories, so you must catch them red-handed and discipline them on the spot.
3. After training, take a clean piece of toilet paper, pick up the poop, and let the kitten smell it. Then take it to the litter box so it can see you've put the poop in it. Since cats rely on scent to find their way around, this clearly tells it, "Your litter box is here!"