Raspberry beetle! Help!

So my mother is law is over and I was checking out my raspberries...which I have lot of! Most of them are still ripening, but a couple were nice and pink. 

Then she says 'oh, when i was a little girl we picked them in the woods until one day we opened one out and saw a maggot inside, you need to be careful with maggots!' o i opened one of the ripe ones up and saw a bloody maggot in it!! Argh!! 

I was soo looking forward to my raspberries! Is there anything i can do now to save this years crop? Can i spray them with anything?