I’m removing these Bollard Guides which you use to hold the Bollard walls and to have something to press against while installing them.

I always use a but of Masking Tape on the outside of the guides so that the glue doesn’t permanently stick to them.

Unfortunately some of the glue always seems to seep through so some sanding is required.

Anyway, I use a pair of pliers to snap off and remove them… Then use a Chisel or a Flat Xacto Knife blade to put it at the same level as the deck.