Question: how much polysorbate 80 to use in room spray?
Answer: You need the Polysorbate or CCG because you need to disperse (solublise) the Essential Oils and/or Fragrance into water. If you are going to keep this for any length of time do include 0.3% Liquid Germall Plus. Regarding the amounts of Polysorbate, the rule of thumb is to use a 1:1 ratio.