I have big oak trees that drop acorns, leaves, etc, won’t this clog this foam up?

Hi There-GutterStuff is easy to maintain and install. Debris and leaves should blow right off and the product works in all seasons. If you see that your product needs to be cleaned, don't shy away from removing it from your gutters and spraying it off, and then re-installing. if you had any other questions or concerns, please reach out to the manufacturer or Lowe's.