How to prevent and cure the red spider of flowers on the balcony at home?

Family flower can be prepared for flower sprayer, in 400ml water, propargite or quick kill or Hua Chong Jing can drop 4 drops (equivalent to 2000 times liquid), with triclofenac or dimethoate can drop 8 drops (equivalent to 1000 times liquid), shake well after adding medicine, then spray it evenly and thoughtfully, especially pay attention to spraying the back of leaves.