strawberry being decimated by sow bugs (wood louse)

Hi All
I have problem with sow bugs eating my strawberries before I get to harvest them
what is the best  way to control them and stop my strawberries from being decimated.
I have the strawberries in a raised bed with a cover of straw around them to keep them of the ground
and they are netted to stop the birds. Any help will be most appreciated .

Only time we had this problem is when we put straw down, we now dont straw at all.

To be honest the strawberries are only attacked when they have been left to go too ripe but as MOS says they tend to follow someone elses dinner

Yes, they probably are 

I use black landscape fabric that does the same trick in keeping the fruits off the soi, suppressing weed growth in addition to acting as a physical barrier for the slugs to get through. They still come up of course through the slits you make at the base of the plant but far less than I used to get.  It also helps if you're going to put down  a few pellets, as  they stand out really well against the black fabric and you can see when they need renewing. If I want to create new plants, I just put the runners into small pots with compost and clip them in with  a small section of bent over coat hanger. The pots tend to stand up more readily as well as the fabric creates a smoother surface for them to stand on. Hope that helps.

Cheeseybobs do eat strawberries and need no help to break in to them !
The cure is the same as for slugs, little blue pellets which dim woodlice prefer to prime strawbs !