When you started the outdoor training, have the pads still been in their usual spots, or did you take them away? If you took them away, yes, this is probably going to confuse him to have them appear only on rainy days. He might think he isn't supposed to use the pads anymore.
One of my friend's girl is strictly outdoor trained, but when weather is dangerous, she will take her girl into the garage to use the pad. The pup doesn't like the pad, but still considers the garage as separate from the house.
I think your best bet is to choose to either have the pads always available, although outdoors will be the primary potty, or to brave the rain.
__________________ Kristin, Max and Teddy  |