How do I remove adhesive glue from walls?

Monica Schiltz
by Monica Schiltz

We are Redoing our bathroom and live in a 100 year old house. There were hard plastic tiles on the walls. Upon removing them we discovered they used some sort of adhesive/glue that is very hard to remove. Tried using a putty knife and that did not work. If we sand it we run into old plaster walls (with horse hair mixed in them). And it comes off very easily. What would you suggest??? Husband has a week off and we want it done before he goes back to work. Thank you in advance!

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