Posting for a friend(sorry this is off-topic):
I am planning on installing the gutter guards on the side of the house
that faces the woods. The leaves build up on that side of the house
every year. I am thinking about the ones that are sold in Home
depot(Model: #451-25)

Is the leaf-guard a permanent solution? Does any cleaning needs to be
done after they have been installed? I know theoratically the guards
should eliminate any leaf build up in the gutter, but does that actually
happen? Or do the leaves pile up on top of the guard needing to be
cleaned? And does the guard let the water flow into the gutters when in
the heavy rains(like we had during the last few days)?

Thanks,
BB