I have purchased some very old bees wax (15+ years) from a relative of an artist, painting with wax. I am hopping that it doesn't have any neonicitoyid (spelling??) contamination. If this is the case, i plan on using the wax for brushing on comb and grafting. I would like to know for sure. Dose anyone know of labs testing for wax contamination for free or inexpensively ?