Question
Is it ok or recommended to add a dry laundry detergent to your dry lawn fertlizer during application?

Answer
Hi Dave;
I wouldn's use it under any circumstances,
detergents are the main cause for the pollution in streams.
there are harsh chemicals in them that can harm or even kill vegetation, as well as fish etc in the streams.
I don't know what the detergent is supposed to do fo a lawn, but it will sure do a lot TO it.
Charlotte