Over the past decade. the high-dose refuge (HDR) strategy. aimed at delaying the evolution of pest resistance to Bacillus thuringiensis (Bt) toxins produced by transgenic crops. became mandatory in the United States and is being discussed for Europe. https://www.bekindtopets.com/super-pick-Rx-PrednisTab-prednisolone-Oral-Tablets-save-more/