Loose gravel on the roundabout

You have put anti skid surface down going northbound as you come to the roundabout but not bothered to clear the excess material which has made this now very dangerous as you approach the roundabout also the excess material has now spread all around the roundabout making the roundabout an accident waiting to happen for motorbikes of which I ride this road daily.

Please get a road sweeper to clear away the excess material or don't put down as much and think about the motorbikes.

We would get into trouble if we dropped loose stone all over the road so why is it OK for you to do this.