The U.S. Food and Drug Administration (FDA) conducted a survey in 1986 to determine whether samples of fruits and fruit products contained residues of daminozide (Alar), a plant growth regulating chemical, and/or its degradation product, unsymmetrical dimethylhydrazine (UDMH). Maximum daminozide residue levels detected were 0.6 ppm in stored fresh apples, 0.8 ppm in applesauce, 1.1 ppm in apple juice, 3.6 ppm in frozen cherries, and 5.9 ppm in canned cherries. No daminozide was detected in grape juice samples, either single strength or concentrate. Maximum UDMH residue levels were 0.062 ppm in applesauce, 0.041 ppm in apple juice, 0.007 ppm in frozen cherries, and 0.60 ppm in the canned sour cherries. No UDMH was detected in stored, fresh apples or the grape juice products. No findings of daminozide exceeded the tolerances, which are 20 ppm for apples, 55 ppm for cherries, and 10 ppm for grapes.