I Haven't used the silicone pie shields, but if you're having trouble with shielding the pie edges with foil, give this a try. I cut a circle out of aluminum foil an inch or two bigger than the pie. Then cut out a circle from that circle leaving about a two inch ring. Use that ring to shield the edges of your pie. It's just the right size and stays on well because it's only one piece. I hope this is helpful!