All breeds are accepted for treatment, because each dog is an individual. The behavior could have a medical reasons, so wise to see a vet. Even if it is anxiety based, a vet can help.
You need to call and ask them. Right now, they take the dogs inside for you, no people, mask required, but you could also check online for pit bull behavior or dog behavior. This sounds like marking territory or anxiety. https://wagwalking.com/behavior/why-do-dogs-scratch-the-floor/
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