We could try going over the area beforehand with a rake, while raking up some of the bigger twigs and sticks, some of the creatures might get the message that something is about to happen, and clear off.
I don't like mowing because I'm aware that probably thousands of tiny insects lose their lives in the process, but if I let the grass grow too long, I could be held as breaking one of the conditions of my lease, and could end up being evicted. Right now, becoming homeless - literally - would not help in my dhamma practice, because then my kids could no longer stay over on weekends, etc -and they need their father in their lives, in an environment more secure than a cheap caravan park or rooming house...
As laypersons, sometimes we need to weigh things up, and sometimes either decision we make is imperfect, ime.
When this is, that is.
From the arising of this comes the arising of that.
When this isn't, that isn't.
From the cessation of this comes the cessation of that.