Trampoline installed by tenant without my permission, twice

[Shelley Peever]

Hello everyone - I have seen the trampoline posts in the past - I would really like some feedback - I own a duplex in Ontario Canada, and I have separate tenants either side. Tenants on the left were inherited with the purchase several years ago - they had a trampoline set up at that time, and I had my property manager ask them to remove it. They did remove it, but I have changed property management companies, and now, 2 years later, I see that the trampoline is installed again, and the tenants have installed a second shed without my permission. The lease was re-crafted when I purchased to add an appendix that strictly prohibits trampolines, pools, swing sets, and more.  Any feedback would be appreciated.  I am ready to get these people out, but it is very difficult in Ontario, Canada.  Thank you.