No no dont use Revive in the summer, that is crazy. Well just dont use too much, likely to burn the hair right of your heifer if your in Texas and they ever see the sunlight.
Nope not for me, i would just use Kleen Sheen or Laser Sheen mixed with some vinegar, and spray that into them and stick them in front of two fans with a stall with no direct sunlight and misters.
I seen a heifer lose a lot of hair this summer, because a kid saw another kid using revive and decided to do the same in 100 degree weather. Im talkin that hifer was greasy looking. What ever you do go easy on the revive and i never spray it on the legs.