A mother of teenagers read of a possible solution to untidiness...crying, while at the same time 'taking ownership' of her own feelings.
Her son left the bathroom in a mess, with water and towels on the floor.
The lady began to bawl, audibly.
"Oh dear, I feel awful! I worked so hard to make the bathroom spic and span and now it's all a mess again!!!"
...And so on. (She said nothing accusatory, just that she felt bad.)
Quietly her son went and tidied up.
Another...that I did with my son...supper on cooking...
Me..."May I talk to you in the bedroom?"
Lying across my bed, hands propping heads...
Me..."I love you, and I always will." (Starting with a compliment.)
Me..."You know the way you growled at me this morning? ...That's no longer acceptable."
Him..."Okay. ...That's all?"
Probably he was so surprised that he didn't have to wait through a lecture, and at not having to 'defend' himself, that it stuck. Nineteen years of growling was over, and has never happened again.
This next is going to sound 'far out', but it seems to work.
See puppy as perfectly clean and healthy. In fact, see Mum's whole home as lovely, warm, and refreshed...starting now. Physically smile at it, and all who visit there. Appreciate every inch of it and every experience there. Love her, and her home.
You could think of the vastness of the universe at the same time, but just a physical smile will do. It seems to project your best vibrations onto the property.
What the heck, it can't hurt!
Probably I'll think of other suggestions, just as soon as you are out of sight.
There's a very pleasant, non-commercial video that you might enjoy, Aslanlight.