How do you go about asking tenants to leave...

[Mario Casarez]

How do you go about asking tenants to leave once you've purchased a property with renters living there?  I was reading through a post where a user said:

Originally posted by @Luan Oliveira:

@Abraham B. Are you looking at small multis or 5+ units?

I've purchased three 3-fam properties in the last three years all off the MLS ...

...Don't always rely on the existing rents either. You have to be ready to ask the tenants to leave, then spruce up the units to get top rents (fresh paint and floors will make a world of difference). Alternatively, be ready to raise rents on existing tenants.

So my question is, how do you go about asking tenants to leave once you purchase a property with tenants already living there in order to spruce up the place to be able to ask for higher rent?  Has anyone been able to do that successfully without paying them to leave?  If so, how?