The BISSELL® FreshStart Kit helps maintain the cleaning performance of your CrossWave and extends its longevity, ensuring the best cleaning results. The kit contains 2 (two) FreshStart Clean Out Cycle 236 ml and 2 (two) FreshStart filters. Compatibility CrossWave OmniForce, OmniForce Edge, OmniFind 3912, 3999, 4000, 4006, 4007, 4008, 4017.