This apparently is the number one cause for Dogs being taken to abandoned dog charities. It is often difficult and often professional dog walkers such as London Dog Walking are often asked to help, so a key part of puppy care. Experts believe the best method is to use a cage. Often a breeder will {use a cagehave used one}, and will often sell on the crate, as the puppy is used to it. The crate method is based on the principle that puppies do not like to mess their beds and in a crate would have no choice but to lie in the mess. Whilst in these confines the puppy will try to manage their bladder. Young puppies from 7 weeks or so should last about 8 hours. During potty training, leave the pup inside the cage when he cannot be watched, whilst you are say having quality time with the children. Just prior to placing him into the crate or taking him out of the crate, take him outside so he can go to the toilet. There should not be any water or food in the crate, just a blanket and perhaps a toy to occupy his time. As time goes by and the puppy performs better, you can leave the puppy for longer periods out of the cage.
The cage needs to be right size, enough floor area for him to lie down. But not so large he could urinate in a corner. The crate is essential for the dogs whole life, so to avoid replacing cages as he grows, buy one big enough for his full grown size, with a partition that you can move when needed.
The two alternatives to crate potty training a puppy are constant supervision, which in today’s busy life is too difficult for most people. This involves being with pup constantly, so you can be ready when you see his pre-potty pattern, such as clawing the carpet. Then taking him without delay to his potty area, then bring him straight back, having him praise and verbal clues such as “good dog”. The puppy needs to recognize the reason he was taken outside was for the potty, nothing else, do not confuse him.

The other alternative to potty training is put down papers or pre-treated pads, encouraging them to use these areas, for practical reasons placed in the bathroom or utility room. The papers have chemicals to attract the pup. When you observe with their pre-toilet pattern, pick them up calmly and carry them to the pad. Praise them if they do the business. The main disadvantage with this method, is you have to transition them to doing this outside, by moving the pads closer to the door.
Toilet timing, normally, puppies should to go out, soon after waking and around 40 mins after feeding.
Sometimes puppies will spontaneously urinate when excited or scared, also known as submissive urination. Do not punish the puppy for this. If the puppy is liable to this, go for a walk, prior to any excitement, like family coming. Or if visiting, take them for a walk, just before, or on arrival. The puppy will normally grow out it after about 6 months.
To support the toilet training, as in dog training, you should to use verbal clues. Good ones are simple and distinctive. Everybody in the family or in contact with the dog, such as your dog walkers and the pet sitter need to use the same words. One or a maximum of two words.
Outside: For going outside, to go to the potty. Use a different word such as “play” if its for more of a fun activity, though he may eliminate when he is there.
Potty: Go to the toilet.
Good Dog: For any praise to give him.
No: When they are doing something wrong, such as going in the wrong area, or inside.
There are probably two rules to follow:
1. Always praise success.
2. Never punish the puppy, if you do not see him in the act of doing something wrong. He will have no idea why you are scolding him.

If you see him urinating inside, carry him to the place, will often stop him, as well as reinforcing what he should be doing.