Need help with 3 year old Basset peeing in the house

We have a 3-year-old, purebred basset hound. She still pees in the house. We let her outside often (we have an invisible fence). She also gets up three or four times in the middle of the night. We do not crate her. My wife is about ready to go crazy. Any suggestions to help us?

submitted by /u/wiaz78
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