need to get rid of stink bugs were orange now black from my lemon and lime tree

When Stink Bugs, or also known as 'Bronze Orange Bugs' are active on our Citrus trees, the best time to manage them is when they're in their juvenile stages (green and orange) using 'Yates Nature's Way Citrus & Ornamental Spray'. Once they've turned black, the best management strategy is hand removal (wearing gloves and glasses for protection from their spray!) into a bucket of hot, soapy water.  

https://www.yates.com.au/plants/problem-solver/pests/bronze-orange-bug/