As neither of these pokémon are partially rock-types, you can actually give them a pool or other body of water to keep them cool. Ensure, of course, that the water is always as cold as possible by stationing a water-type at its side.

Alternatively, many steel-type trainers give their pokémon a form of shelter, such as a lean-to or hut, to provide them with additional shade. Planting more trees may be beneficial to the bisharp in particular, as they tend to be forest-dwelling pokémon and will take comfort in the presence of a forest shade. Mawile are cave-dwelling pokémon, meanwhile, so a hut, a shed, or even a small, cave-like structure dug into your yard will do for its needs.

If all else fails, however, consider partnering them with water-types and have them periodically spar with their water-type teammates. Water from a pokémon is typically of the optimum temperature to cool most pokémon down, so this may be sufficient short-term solution.