Nilco Heavy Duty Floor Cleaner 5L An alkaline, biodegradable, solvent-free detergent cleaner concentrate for all water and alkaline resistant flooring. This product must be diluted with water prior to use Where to use On all water and alkali resistant substrates, for heavy to light duty cleaning applications. This product is particularly effective for the removal of fatty and oily soils. Where not to use Decorative waxed, or dry-bright polish treated finishes. Bare or untreated timber In the vicinity of aluminium surfaces or furniture.