I have planted some marigolds and alyssum flowers amoungst my new strawberry bed. They apparently attract ladybettles and hover flies which will devour the aphids. Last year I had an aphid problem late in the season and surfice to say I did not get a 3rd crop out of the strawberries. This year, in with new crowns in a different bed and hopefully the flowering plants do their job.
I did notice a few aphids on the straberries, but the organic squish method has taken care of them and will be until the flowers start to do their thing.