Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A bad idea

I had to tear out a deck I had installed with these. The problem is while they space the decking nicely, they also keep it from expanding at all. The 10 x 12 deck I made with Bulletwood (a tropical hardwood being sold as decking in my area) expanded so much it pulled the joists right out of their hangers! I would check out the "Tigerclaw", a fastener that drives in with a hammer and doesn't fill the gap between deck boards.