[en] We consider quantum superposition states in Bose-Einstein condensates. A decoherence rate for the Schroedinger cat is calculated and shown to be a significant threat to this macroscopic quantum superposition of BEC's. An experimental scenario is outlined where the decoherence rate due to the thermal cloud is dramatically reduced thanks to trap engineering and ''symmetrization'' of the environment. We show that under the proposed scenario the Schroedinger cat belongs to an approximate decoherence-free pointer subspace. (author)