There are many PGRs that are non toxic. IBA is one of them used as a rooting hormone.
ethylene is a plant hormone does that mean if you put a ripe banana in your grow room you are using the dreaded PGRs.
triacontanol is a plant hormone derived from bees wax, certain kelp species and alfalfa. Does that mean using a cover crop of alfalfa is using PGRs.… or all you organic guys adding kelp supplements are using the dreaded PGRs.
See the problem is PGRs have a bad name because people lump then all together… some can be extremely toxic but other are not toxic at all….
to all you anti PGR ppl whether your organic or synthetic really need to stop the misinformation that is all PGRs are bad. Because 99.9% of growers are using PGRs whether they know it or not
not to mention your plants are making then on their own