Commercial Tenant Lease Expiring, not renewing CA

[Khaled Seirafi]

Hi all,

My family owns a commercial space in a building in California. Their lease is coming to an end in September and we're not going to renew it nor are we going to allow the tenants to sell the business. It's a liquor store and we're trying to clean up the property. 

My question is how can I ensure that the tenants will actually remove all their personal belongings (refrigerators and counters mostly)? The lease does state that any fixtures are considered the tenant's personal property. They're pretty nasty tenants and I'm expecting that they're going to make this as difficult as possible for us. They've been in the property for 30 years and don't want to leave. 

Any thoughts?