What to do if unsure if tenants moved?

[Jayne Rocco]

Evicting tenants due on 1st for breach of lease. Texted me they were moving on 7th then gave 4 different dates. Their friend told me they now live in another house but they left a lot of stuff and a week after the last move out date are still taking their time moving it out while leaving all utilitues on I'm paying. They wont answer phone and I dont know if they are finished or when I can go back in. If gone or almost gone like to avoid eviction costs but afraid to go in.