User blog:Fistful of Force/Counerjungling part one.

Right so counterjungling. The first thing to note is: Don't do it.

This is because Counterjungling carries a lot of risk inherent in doing so. Firstly, it takes a lot of time to do it: In the time it takes to walk to the enemy wraiths and do them, you could have cleared your own and been at your golems. Of course, jungling champs with high mobility like shaco and nunu don't have this problem, but the concept still remains: If you can't take their jungle in addition to doing your own jungle, it's just not worth it.

Secondly, it's not safe. Since your in their jungle, if they notice you, their team will react faster since they are closer. You are basically putting yourself at risk for little or no gain, so you only want to counterjungle if A) It will hurt them a like (Fiddlesticks needs his blue, for example, so taking it will really screw him over), or B) You will benefit from it (If you steal purple red while playing as an blue early aggro like noct or xin, it's smoother to just take it and walk to top, esp if you know they will start blue)

If you can't fulfill these two criteria, then don't bother trying to counterjungle.