Last week I bought a watermelon that had this. Companies sticker on it,,,, I became quite ill with an horrible headache,,discovered after ,do not eat watermelon when the white rind us yellow ,they have shot it full of nitrates to make it grow faster and weigh more ,,, that caused the severe headache ,diahrea and kidne y pain ,,,, they same they are home growers from Mexico ,,, they need to be shut down by public health ,, I contacted them a few days ago but they don't reply ,,, don't buy their produce especially watermellons,, you will end up with nitrate poisoning !