Question about daffodil bulbs

Hi there

I'm sorry if this is a really dumb question, but I'm only a (very inexperienced) window box gardener.

OK, so I have some daffodils in my window box. They're starting to be past their best now. Last year (which was the first year that I planted them) on your advice, I waited until they'd died down, took them out of the soil, dried them out and kept them, until it was time to plant them again. They came up a treat again this year. My question is, can I do the same again this year?

And, does this only work with daffodil bulbs?

Thank you

 

That's absolutely brilliant, thank you!