How do you practice a dog that is home for the first time to poop in the toilet?

There is a certain prompt action before the dog excretes, such as turning around in one place or something like that, if he feels that he may want to excrete, take it to the toilet, if he doesn't pay attention, he is convenient in a place other than the designation, he must wipe it clean, and use something to replace the smell (freshener, vinegar, etc.) to eliminate its original taste, you can use the paper or rotten cloth stained with his urine to put it in the toilet, it will not pull randomly after getting used to it.