Carbon Monoxide has proven to be a well-calibrated tracer of the total molecular gas content in galaxies at low and high redshift. However, CO observations in galaxies of sub-solar metallicity remain challenging, even in the local universe. For that reason, the dust mass is often used to infer the molecular gas in low metallicity systems. I will present first results of CO and dust measurements in the Lyman Alpha Reference Sample (LARS), a sample of local Lyman Alpha emitting starburst

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... all of sub-solar metallicity. Using multiple-J CO transitians obtained with APEX and the IRAM 30m telescope, as well as Herschel/PACS and WISE data in combination with physical dust models and PDR codes, properties of the star forming gas could be derived and CO and dust scaling relations studied.