I had a trellis glued to the brick of my home and I now that I have removed the trellis, I can't get rid of the glue stains on my light colored exterior brick.

What kind of glue was used, construction cement or what?

I'm not sure what kind of glue was used. It is a dark yellow/golden color on the light colored brick. It did not come off when the brick was power washed. It was used to hold a wooden trellis up on the brick.