Research published by Kamal Adhikari et al at the Farmed Landscapes Research Centre annual workshop in February 2024, showed the potential of Spikey applied DCD to reduce nitrous oxide emissions. Several inhibitors were evaluated and the "results showed that the N2O emissions reduction efficiency from urine patches was the highest (35.8%–46.7%) with DCD."
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There is a new generation of inhibitors under development with the potential to achieve far better results than this - perhaps one day, nitrous oxide emissions, which over a 100 year time frame are far more concerning than methane, will be a thing of the past.

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Full reference for the paper is:
Adhikari, K., Saggar, S., Luo, J., Giltrap, D., Lindsey, S., Berben, P., Palmada, T., Bates, G., 2024. Significance of inhibitor volume in on-farm mitigation of nitrous oxide emission from dairy cattle urine patches. In: Opportunities for improved farm and catchment outcomes. (Eds. C.L. Christensen, D.J. Horne and R. Singh). http://flrc.massey.ac.nz/publications.html. Occasional Report No, 36. Farmed Landscapes Research Centre, Massey University, Palmerston North, New Zealand. 11 pages