Just in time for summer, Beatbot's pool-cleaning robots are on sale through the end of the month. If you're on the hunt for smarter pool care, these are some of the best pool-cleaning robots on the market, and we haven't seen them sell for less. Whether you're tired of paying the pool guy or just don't want to deal with whatever scary stuff is floating in the water, these robots can help. Be sure to check out our related buying guides for more summer outdoors coverage, including the best bug sprays , the best sunscreens , and the best fitness trackers . Beatbot iSkim Ultra Robotic Pool Skimmer for $599 ($400 off) Beatbot iSkim Ultra Robotic Pool Skimmer This surface skimmer is slow and methodical with its approach, which means it won't slam into your pool's walls while doing its job. Use the app to set schedules, monitor the temperature, dock the unit, adjust its speed, and more. It has a 9-liter basket that holds a ton of crud and features both solar and magnetic wireless charging.…