Autumn Turf Pro Compound Fertiliser (3-12-12) (20kg)

Spread two bags of this one week ago over two lawns approx. 1000sq/M in area, using a Scotts Rotary EasyGreen spreader set at 31 (50g/m) as per Nutrigrow instructions. It rained quite heavily the night before and twice more over the two days. So I thought, perfect...!Not to be...My lawns now have large brown patches where the granules are still obviously not showing any scale of dissipation. Looks more like miniature Rock Salt granules have been spread.I will not buy again.