Stuck on activating a relay

Projects Programming
11

Hi
It's not just the comment that's wrong.
Turning an output on and off immediately does not work with mechanical devices such as a relay.

  digitalWrite(spray, HIGH);   // turn spray ON
  digitalWrite(spray, LOW);   // turn spray ON   <<<< ----- OFF?
  delay(100);
  digitalWrite(spray, HIGH);   // turn spray ON
  digitalWrite(spray, LOW);   // turn spray ON   <<<< ----- OFF?

RV - mineirin