Raking is counter-productive for beaches contaminated with oil, as the spring tines break up the oil clumps or move them into deeper, clean layers of sand. That's why BeachTech uses no tines for oil removal work and gently scrapes the contaminated surface with the pick-up blade. The oily layer can then be separated from the uncontaminated sand using the proven screening technology and extremely fine screening belts. The majority of the sand can be saved thanks to the patented technology of the BeachTech devices, as the gentle method only removes the uppermost sand layer. Take a look at this video to see the BeachTech cleaning the oil spilled beaches!