I bought Leafguard gutters from a salesman who could sell a nickel for a dime. Very persuasive and tricky.
Luckily it rained heavily several times shortly after installation. He came very late to inspect the problem during a rainstorm, which proved the gutters did not work and argued that they did. After several telephone calls to the company and a shoddy repair, I withheld the balance of the payment and was refunded the down payment by the credit card company.
That worked as the new GM offered a new regular gutter system at no charge which I readily accepted. He was a decent person.
Unfortunately, the product is no good. Stay away.
Product or Service Mentioned: Leafguard Installation.