This week at the cottage, I taught Henry to “ding ding”.
If he rings the bell, and gets a treat, then perhaps he will ring the bell when he wants to go out for a pee?
“Ding ding Henry!”
It took him maybe 5 minutes to learn.
And another 5 minutes and lots of treats to perfect.
He then learned that if I ignored him, he would ring the bell and I would come running to feed him.
Clever boy! Here’s the YouTube link to see Henry ringing his bells for blueberries.