can be adequately cleaned by taking one or more of the following actions the liquid composition of the invention may be effectively water based in that case it comprises an aqueous phase which suitably constitutes about 10 95 by weight preferably 50 90 by weight of the overall composition alternatively the liquid of the invention may be substantially non aqueous and comprise less than 10 by weight of water if said liquid is water based it preferably contains from 1 15 by weight of a volatile water miscible solvent such as methanol ethanol and isopropanol as an aid in assisting the evaporation of the water from the lubricant film deposited on the conveyor belt when using the liquid when present the solvent forms part of the aqueous phase if the liquid of the invention is water based it may be desirable to incorporate an effective amount of an anti rust additive in order to obtain adequate disinfection in case of spillages it may also be desirable to incorporate a biocide the liquid composition of the invention may desirably comprise a silicone oil and an aqueous phase this type of liquid composition is effectively a silicone emulsion in water favourable results in terms of durability were obtained when this liquid composition was applied on conveyor belts used for transporting containers selected from polyethylene terephthalate bottles polycarbonate bottles laminated cardboard containers and metal cans made from steel and aluminium furthermore for obtaining most favourable results with this type of liquid said conveyor belts are preferably made of plastic polyacetal or polyamide this liquid composition of the invention preferably comprises 10 95 by weight of the aqueous phase and 1 55 by weight of the silicone oil more preferably the concentration of the silicone oil in.