At some point in every growers experience pests and/or disease is something that needs addressing.

Prevention is better than the cure and a well implemented pest management routine is the best way to avoid getting any grow room pests or diseases.

Regular cleaning and ensuring no old leaves are left about on the floor etc and regularly inspecting your plants is the first step to pest and disease prevention. 

A regular spray of a general safe pest control spray up until early to mid flower is recommended and combined or followed up with predator sachets to ensure pest through growing to the end of the cycle.