Can anyone recommend an attorney who can handle eviction/ejectment of squatters in Lacey-Olympia, WA area?

File ejectment for possession... against QC person. 

No lease/agreement even verbal means they are not tenants and can't be evicted.The process for removal is "Ejectment" which is a lawsuit in big boys/girls court with attorneys and sometimes juries;  costs a lot more and takes a lot longer. 

What should be the minimum purchase cost of a Tax Certificates be considering ROI of filing Ejection Notice and other legal things.

However, if a tenant holds over, after being asked to leave the premises for a lawfully valid reason, and it goes to court, the cost to the landlord can become substantially more.Depending on the laws of the jurisdiction, when the eviction process ends up in court, it may also be known as unlawful detainer, summary possession, summary dispossess, summary process, forcible detainer, ejectment, and repossession, among other terms.

I have a tax deed for a Jefferson County property and am considering ejectment. 

-take steps to immediately eject your neighbor.   

Legal aid said I need to file another summary ejectment.

provided, however, that private property owners or persons in legal control of private property through a lease, rental agreement, licensing agreement, contract, or any other agreement to control access to such private property shall have the right to exclude or eject a person who is in possession of a weapon or long gun on their private property.."

In NC, if you accept a partial rent payment and are in a summary ejectment (eviction) proceeding, you waive the tenant's breach.