Tenant put trampoline in the back yard.

[Misook Foley]

When I drove by one of my rentals, I found out trampoline in the back yard. What is the best way to deal with? We did not specify regarding trampoline in the contract, however we have clause "House furniture, cloth furniture and children’s toys are not permitted to be left out on a porch or in a yard at the end of a day." Any wisdom will be appreciated. I want to be in good term with tenants.