Our global survey showed that 75% of allanalyzed honey samples contained at least oneneonicotinoid in quantifiable amounts and thatthese pesticides are found in honey samples fromall continents and regions. Previous studies conducted at smaller scales (regional to national)reported a broad range of frequency of occurrence and concentrations of neonicotinoids inhoney, depending on the compound, distanceto neonicotinoid-treated agricultural field, andlimits of detection. The percentage of positivesamples is, to some extent, correlated with thedetection limits (table S7). For example, in aBritish study (26), 16 out of 22 samples werepositive for clothianidin, but for all of thesesamples the measured concentrations (>0.02to 0.82 ng/g) were below the detection limit of aSerbian study (1.0 ng/g) in which no sampletested positive (33). With the improvement ofanalytical methods, we can therefore expect thatthe proportion of positive samples will increase.Differences in methods and especially in limits ofquantification (LOQ) render comparisons amongstudies of little relevance. Thus, to some extent