First, read the English article below.

Cats do not like to use a dirty litter box and they may begin going to the bathroom elsewhere if their litter box is dirty when they need to go. If you are not cleaning your cat’s litter box every day, this may be the reason that your cat is urinating on the carpet.  In addition to scooping out your cat’s litter box every day, once per week you should also remove all the litter and clean the box with warm water and unscented soap or baking soda. When you are finished, dry the box and add fresh litter. Try a self-cleaning litter box to make it easier to keep your cat’s litter box clean. It is important to have one more box than the number of cats in your household. For example, if you have three cats, then you should have four litter boxes. If you only have two litter boxes and you have three cats, then the number of litter boxes may be the reason why your cat is urinating on the carpet. If your cat has to make a long trip to get to her litter box or if the litter box itself is difficult for your cat to get into and out of, that might be the reason why your cat is urinating on the carpet. Place your cat’s litter boxes where it is easy for her to get to them in a hurry, such as one upstairs and one downstairs.  Make sure that your cat will be able to see approaching humans or animals and easily get away. Cats don’t like to feel cornered Attend to the needs of older cats by providing boxes with lower sides, for easier entrance and exit to the litter box. Place litter boxes near or over where your cat tends to urinate on the carpet. Cats may avoid using the litter box because they dislike the smell or texture of the litter, or because the litter is too deep. A shallow bed of medium to fine grain clumping litter is best, but you can also try offering your cat different types of litter to see what she prefers.  Give your cat a choice of litter types by placing two litter boxes with two different types of litter right next to each other. At the end of the day, check to see which one your cat used. Provide a shallow... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Bạn làm vệ sinh khay cát bao lâu một lần. Đảm bảo có đủ số khay cát trong nhà. Xác định xem mèo có thể tiếp cận khay cát dễ dàng không. Xác định xem có phải loại cát bạn sử dụng là nguyên nhân của vấn đề. Đánh giá xem có phải khay cát đang khiến mèo khó chịu.