Stop blocked downpipes

This is an intersting new product, I think its too expensive, but the market will tell us that!
Flowmate

As you say - an interesting product; can't help thinking that the cockatoos would just jump at the chance to try to remove it though!  We've been using squares of metal fly screen pieces and replacing as necessary.  cheap-ish and cheerful.

Yes, a bit dear. I've already got gutter whiskers in most of mine. I have to take them out and clean everything once or twice a year. More if the possums bring walnuts over from the neighbour's tree.