1/ First of all, it's best to prepare a cage for dogs, or a fence that can limit their freedom. Never let go. You can sleep anywhere and play anywhere, so it will think that these are my sites and I can control them freely.

2/ Develop the habit of dogs going to the toilet regularly. Dogs will definitely miss NNBB within 5- 10 minutes after waking up and 5- 10 minutes after playing, so at this time, we must resolutely put the dog in the toilet and say something like NN or BB (remember, the password should be the same every time), no matter how it barks. ~ ~ If not, keep it closed for 5- 10 minutes. If it doesn't pull, let it go out for a walk and then put it in the toilet until it pulls.

3/ Over time, it barks as soon as it approaches the toilet, and then barks when it is finished in the toilet. Repeat this training every day, and soon you will see your dog go to the toilet.

4/ If the dog wants to pull outside, stop it in time. If you can't stop it, you should criticize education immediately after pulling it. You can gently warn the dog with a newspaper or hand, and criticize it with a harsh tone to let it know that it is wrong, so that it can be compared with NNBB being rewarded and praised in the toilet. Then after a long time, the dog will definitely know where the owner wants him to poop and won't let him poop. After a long time, dogs will get into the habit of NNBB in the toilet.