Lease expired, can I evicte my tenants out because violating of old lease, no pets, only one person now have pets and with his wife and children

Lease with one single male, no pets allowed, after one year lease is expired I didn't renew it with him, now with his wife, children and pets in one bedroom apartment, bad relationships with neighbors, asking to fix heat and windows, done as they requested, want to get them out now, can I just simply give them notice to terminate the month to month lease, or need to have a reason to end the lease, and if atterney get involved later for eviction can I still cover the fees from my tenants like the old lease was stated