Safe? I hope not! Revisit your "inner Beaver" and fly this rocket. Who doesn't like having their own "ballistic missile"?Has fuel drums (baking soda), and the awesome refill box, but not the oxidizer (vinegar or citric acid?). This rocket has been lovingly flown, but fins are straight and all the parts to fly it are there! Launch button (string) and launch pad security (nail) are included! Instruction manual and all the glass mixing bottles. Box is very good, with no torn out corners or rocket puke! Appropriate shelf wear. Awesome static display even when you aren't flying it! I put some vaseline on the o-rings because that is what makes them happy. Welcome to the "space age"! 3...2...1..Buy It!