It was cold today, very cold! Rod guides icing up can be a problem when winter fishing and there are a few does and a don't when this happens.
Don't try to pick or snap the ice off, this can damage your line and even break the guides. There are a few things for can use to help prevent or slow down the buildup. Lip balm, Vaseline, or even cooking oil can be lightly applied to dry guides, So be prepared and even before you start fishing apply a thin film to each guide. Don't use too much, if you need to reapply soften the ice by dipping the guides in the water before gently removing it, dry them off and re-apply your ice retardant. I have two other solutions you can try - one is Silicone Mucilin, I always have this in my pack and it works well, alternatively just pack up, go home and wait for the weather to warm up!