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The Australian chicken meat indutstry is rapidly expanding due to the increasing consumption of chicken meat. As a result, the industry has growing issues of sourcing new bedding materials and disposing of spent litter, which can be attributed, in part, to a lack of widespread litter re-use for rearing chickens. According to insights and perspectives recently gathered from industry stakeholders, it is believed that re-using litter will become more common in the future, so as to reduce production costs and ease pressures on both the supply of new bedding materials and disposal of spent litter. However, there are potential risks that need to be addressed if litter re-use increases, particularly with regard to the production and mitigation of ammonia, which can negatively affect chicken health if not managed correctly. The present review discusses the potential benefits reported for different types of litter amendments, which have the primary goal of reducing ammonia volatilisation, but may also contribute to improvements in bird performance, welfare, pathogen loads, fertiliser value of spent litter, and reduced costs associated with purchasing new bedding materials. Acidifiers have been shown to be the most effective of all amendment types, with sodium bisulfate or alum being among the most commonly tested products mentioned in research literature. Litter amendments are currently rarely used in Australia, but it is hoped that the information provided in the present review, based mostly on overseas usage and research, will help inform future decision-making on the use of these products in Australian poultry production systems. Ammonia gas released from the poultry litter can contribute to health problems for chickens if the concentration is high. The risks associated with ammonia are one of the leading reasons why the Australian chicken meat industry does not currently re-use litter as a floor covering for multiple grow-outs. The present review investigates the potential benefits of litter amendments, particularly acidifying agents, on the basis of overseas research and industry experience. Litter amendment use overseas has shown that they assist with effective management of ammonia volatilisation, but can also have additional positive effects. Understanding the viability of litter re-use practices that include amendments will support uptake by Australian meat chicken producers. [ABSTRACT FROM AUTHOR]