Puree strawberries and raspberries until everything is completely blended.
Strain through a fine mesh sieve and discard seeds.
Mix add lemon juice and agave/honey and divide among popsicle moulds (or dixie cups). Add popsicle sticks and freeze. (I'd say 3-4 hours but I froze it overnight)
To remove, run warm water on the outside of the moulds =)