The term "straight ammonia" is used in the context of household cleaning products. It refers to a solution that is predominantly ammonia, with a concentration typically between 5% and 10% in water. The strength or concentration of ammonia in household products is usually expressed as a percentage, such as 5% or 10% ammonia.

"Straight ammonia" is used to emphasize that the product is concentrated and contains a higher percentage of ammonia compared to other ammonia-based cleaning solutions that may be diluted or contain additional ingredients.