woodworm under the floor

[mr bean]

I have discovered woodworm holes in the battons supporting my wooden floorboards of my ground floor living room.(house built in 1919)
The worst affected area is on the edge of the room with good access, however I have discovered little holes all over the room(up to 9m away) albeit rather thinly spread. Ideally I would pull up all the boards and treat the whole room but most of the room has barely been touched so I am thinking it may be just as good to spray woodworm killer from certain access points around the room and hopefully reach most of the areas.
Do you think this is a good plan of action, should I do the floorboards themselves and what products would you recommend?

Regards
Mr B

 

[joe-90]

The usual way is to take up about every 5th board to get underneath. Use a pump action sprayer with woodworm killer. All available from the likes of B&Q. If there is no sign of fresh sawdust near the holes they may be long abandoned or even treated before you moved in.