THE POWER OF AZOSPIRILLUM FOR A PERFECT LAWN | Turf Perk STEP 2 Strengthen and Maintain Lawn Care Solution contains concentrated Azospirillum that, when watered in using the attached hose end lawn sprayer, treat a total area of 5,000 sq.ft!. This unique natural Lawn Treatment formula strengthens, enriches, protects, and maintains your lawn by building strong roots, protecting the soil against heat and drought by improving water retention and use, and protects grass against future problems.