Never use every day cleaning fluids as Acrylic can be easily damaged by ammonia or alcohol.
The best way to clean your LED House Number Light is with a warm soapy water solution (a mild detergent such as washing up liquid works well ) and a damp Micro Fibre cloth, using a second , dry Micro Fibre cloth and a circular motion to dry off with an even finish.
I can supply a Cleaning Pack priced including a Cleaning Stick, Micro Fibre Cloth & Cleaning Fluid for £10 if required.