What's happening?

[Okami]

My old dog is having alot of accidents around the house. I don't understand why, I walk her 2 times a day for most of the week, somedays I can only walk her 1 time a day. When I can't walk her twice a day I put her in her outdoor pen, which has a bathroom area so she can go to the bathroom in there. Every single time I don't walk her 2 times in a day, she has accidents around the house. Sometimes she does it evern when I walk her 2 times a day. I've gone through numerous brands of dogfood thinking it might be causing my dog to do this. I don't know what's wrong, she used to be so well trained for when and when not to go to the bathroom.

[MIA]

I strongly suggest you see your vet and have a urinalysis done, she could have an infection OR as you mentioed she is older and she could be simply loosing control - it happens in older dogs and there are meds for it.

Good luck!