He did this yesterday at a friends house. He is 74 and is very amiable. Was diagnosed 4 years ago. He is in daycare 3 days a week and I am afraid he will start this behaviour there. Our shed roof is outside the bathroom window and I noticed it was covered in small balls of Used toilet paper. At my friend's house she found two dirty pieces of toilet paper under the toilet window in her trees. What can I do to alter this behaviour. This is the first time he has done it apart from home, as far as I am aware.