Wastewater treatment in catering, the agri-food industry, campsites and sites without a mains connection combines biological products that break down organic matter with a silicone defoamer. The range includes biological treatments for grease traps and grease containers, pipework, septic tanks and chemical toilets, in liquid, powder or water-soluble sachet form. The biological products work with seeding and maintenance doses. For blockages, see the professional drain clearer products.

The most widely used are Defoamer Pro, a defoamer at 0.5 to 2 %; Bio guard, for grease traps and drains, started by emptying the trap and applying an initial shock dose; Bio treat, for chemical toilets at 5 % by volume of the water to be treated; Bio Soluble, 3 seeding sachets per 1,000 l of tank and 1 sachet every two weeks; and Bio tank, a powder for septic tanks and grease containers. All include a technical data sheet and a safety data sheet (SDS); Instaquim is the manufacturer.