The only thing I can think of is it might cause problems as reguards to housetraining. I got my Shih Tzu when he was 5 months old, from a kennels, so he has been used to peeing in his own area, so house training is taking longer. I`m just thinking if your puppy needs to have a wee in the evening or bedtime, he might decide to just go on the floor in the house as thats what he`s used to doing in his kennel. But on the good side, he does get the best of both worlds.