Automatic pool cleaners will not work in spas, hot tubs, bird baths, fountains, ponds, nor will they clean kiddie and wading pools. The Pool Blaster Aqua Broom by Water Tech Corp has extraordinary power for thorough clean-ups of virtually any water applications. kiddie/wading pools, spas, hot tubs and fountains. A great spot cleaner for traditional above ground and in-ground pools, the powerful Aqua Broom uses five standard D-cell batteries providing up to 3 hours cleaning time (on average a set of batteries will last almost an entire season). No charging is required for quick clean ups giving the ultimate convenience of use.