Diatomaceous earth usually sourced from permaguard?also, do u use it?

Is most diatomaceous earth sold all really sold from perma-guard and rebagged as some other brand. Many on amazon just sell their d.e. in plastic baggies, with or without a cheap label. They sell thru distributors, but I would rather not buy it bagged that way. Anyone use this w good results, or side effects? N what brand? Tweet