UltraTech ultra microbe boom offers polyethylene foam specially used in ultra-microbe booms which help it in floating on the surface of the water as it absorbs oil. Features: Removes grease and oil from catch basins naturally and safely. 4-feet lanyard. Microbes are all released as tablets where they are housed dissolve. Booms can be easily dropped in or even tied off in catch basins, water or oil separators. Uses specially treated polyethylene foam in Ultra-microbe booms which allow it to float on water surface as well as during absorption of oil.