Keeping the gutter on the roof clean is not as easy as it looks. After a while, leaves that blow from the trees will get stuck in the gutter, causing the gutter to choke. The rainwater from the roof will not be able to pass through if the gutter is blocked, so you will need to get up there and clean it out after every couple of months. In some cases, birds might end up building their nests in the place too. Most people get up with a ladder in order to clean the whole thing. Others use robotic gutter cleaners (though they aren’t quite effective).