If I leave who will kill the cockroaches?

Moving everywhere 

Marching like madness 

Creatures that you won't enjoy 

Just seems to be more and more 

Climbing up and down the walls

Flowing along the floor 

Don't think this is for our entertainment 

Perhaps trying to cause estrangement 

We are not happy about this arrangement 

It might interrupt our engagement 

They are even gathering on the pavement 

Wasn't our idea of a party 

Not the likely guests 

This bunch of nasty pests

It would be best if they left

Then at least we could get some rest 

Not usually a thrill to have to kill

But we were hoping that we could enjoy peace still 

I bet that to you they are also a pet peeve 

When they are all gone you won't even grieve 

But you will be relieved and feel at ease now that you can breathe 

So I bet you will be glad to get rid of these 

You can have your rest as there is no more threat

The question remains if I leave who will kill all the cockroaches?