Have aphids on dwarf Schefflera and need to get rid of them before they start munching on my other plants.
Aphid Removal on Houseplants
Certified GKH Gardening Expert
I would first wash it off. Placing the plant in the shower works well for whole plant cleaning. Then you can treat the plant with neem oil to get rid of the aphids. Here is more information on neem oil: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm