Feeding beans

Do you feed your beans? 

I never have. But wondering if I should. Especially as they are in a container (fish box ). Then I wondered what to feed them? Do I use my home made sheep daggings liquid feed or tomato feed or something else? 
Any advice would be appreciated.

I've never fed beans, only because at the time they're producing there is so much else to do. If they are in a box I don't think they'll complain if you give them something nice but what is beyond me.

'T Web says tomato feed as they deal with their own nitrogen requirements.

Thanks JJB. I’ll give them a feed tomorrow. They are starting to produce some baby beans. Finding them to harvest is going to be tricky. There’s a triffid (pumpkin) completely surrounding them !