Dunwright tackle storage question

I was lucky enough to have a 10″ lifelike perch and a lifelike crappie from Dunwright tackle in my stocking this Christmas! Here is my question, how should I store these things in my tackle box. I had 2 of the pike this summer melt on me after only one day of use. One of them I will admit some fault on because I put it in a compartment with another plastic bait, which i can see how the different plastics might react to each other. The other was just in a plano 3700 and the tail melted enough to totally screw up the action Dunwright was very good about sending replacements by the way. These look like awesome lures, but won’t do me much good if they keep melting. How should I store these things? Thanks, Jason!