We wanted to light up our front porch without holes everywhere for hooks.  This wasthe perfect product for that use.  The command adhesive held strong against the aluminum and vinyl trim as well as  the vinyl siding where needed. Be sure to follow the  pre-cleaning instructions to insure the best stick.  The porch looked beautiful and clean up took about five minutes after the holidays.  I do wish the clip portion was a bit stronger since I broke two of them in careless handling while putting them up. Be careful not to pull on the light string at a forward angle while putting them up.  They are inexpensive and all you'll need to repurchase next year is the small adhesive package.