Tired antirrhinums

I have some containers of antirrhinums. They flowered well but are looking tired. If I cut them back, will they rejuvenate?
TBH, I'm not that keen on the colour so I'm not bothered about saving seeds.

 

They do put up smaller secondary flowers, but I always found they get rust by the end of the summer.

 

I suppose they look tired like other plants due to the drought. Plants feel if something is not right.
I wouldn’t cut them down but left them unless you would change the planting.
@pete Anthirrhinums were the last ones in my garden that went off, and if so then in November. Many of them coped well with winter but were tired looking in the second year.

 

I do deadhead them. Is it just the flowers looking tired? Sometimes the leaves can go floppy and if a good drink doesn't perk them up in 24 hrs, they probably aren't worth saving. It's some sort of virus they are prone to that makes the insides of the stems go hard and they can't suck up moisture.

 

Some have got rusty. I'll cut them back and move them into the oubliette and see what happens.
I need to be more ruthless. I have too much ruth!
They really belong on the compost heap.