I've used gutter brushes for several years on two homes. They don't keep everything out of the gutters but do keep most of the leaves. They are very inexpensive compared to other types of gutter covers (less then $1.50 per linear foot). Easy to install but I'd recommend buying the flexible mesh-type downspout inserts to help keep leaves and debris out of the downspouts.You do have to get on a ladder or the roof to remove these and clean the gutters at least once each year. This is a bit of a pain so I hire a gutter cleaning guy and for $150 he removes the brushes, cleans out the gutters, cleans off the brushes and replaces them.