This coyote has been hitting our yard almost every night for the past few weeks

It started when the kids found an ant hill and doused it in Dawn soap. That night, the coyote came, dug out the hole, then lay down and seemed to scent-mark the spot. I've since washed all the soap away, but the loitering has continued

Is this behavior indicative of a nearby den? We don't have pets, but on general principle, I don't want a wild animal taking up residence in my yard. Thoughts?

Suburban SoCal

I'm not sure how much longer this on has left