The Pests' Demise

I declare, as I stand upon this box of soap
That though the battle may seem lost, there still is hope.
I make this declaration, now and today:
If you are not welcome here, then you will go away.

We do not need your kind crawling through our walls,
Or lingering outside our doors, or loitering in our halls.
You may return whence you came,
Otherwise, the exterminator will find ample game.

And as you face the poisons that will destroy,
You must understand: your extermination is our joy.
We do not need any more pests
In our home making any more nests.

So, until you decide to start paying rent,
I have to call in your tab, everything I have lent.
Oh? No money? You cannot pay?
Well, that won't really matter now, after today.