Like any tape you want to make sure the surface is clean and dry. A small hand broom works well and will get the job done. A steel wire brush is too coarse and will cause unneeded surface dust. The only time this tape won’t work is when the foundation block is either damp or dirty. If it is to damp to stick you can use a polyurethane caulk to seal the crawl space liner to the foundation after the foundation pins are installed.
When used properly this tape will save you hours and give you a permanent seal.