Lethal 2-N-1 Laundry Sheets Odor Eliminator Odorless 20 Per Pkg Lethal 2-n-1 Laundry Sheets can be used as an odor eliminating laundry booster in the washing machine or as a dryer sheet to eliminate odors. Unlike typical, waxy dryer sheets designed to soften and scent, Lethal 2-n-1 Laundry Sheets use an advanced formulation that works best when moist. The presence of water molecules allows for the attack of odor-active compounds that bind with odors upon drying. Non-allergenic and no UV brightener..