What do you put it in?

Kath

It is just the dry fluff from the front filter of the tumbler drier. All
rolled up into a ball, held together with an elastic band and tied up. It's
not a very big ball, it all depends on what has been dried. An all Wood
jumper or sweater produces quite a bit, but a nylon shirt, nothing!

But it is the woolly/shreddy soft string which is best :-))

We will miss the nest building season next year as we are away from January
7th to March 29th

Mike