Need to Evict Tenants in Virginia

[Seth Rob]

Current tenants haven't paid rent since June. They owe over $4000 in rent. I've offered $1500 cash for keys of they got out in August, but they have "no where to go."  Tenants were given 45 and 30 day notice that the lease would not be renewed. The lease ended Aug 31st, now that the lease is over, is this even classified as an eviction? Is going through an eviction without a lawyer a straight forward process? Ideas on how to proceed?