It should be fine if you are shaking and spraying ROOMIGATOR before each use. If the sprayer slows down its pumping action, gently tap the bottle on a hard surface, shake again, tap, and try spraying. You can also take the sprayer out and run it under hot water, then spray any remaining product from sprayer before replacing it on your bottle. NOTE: Every sprayer is tested with a "one-spray test" before it is packaged and sent to you. Sometimes things happen, and while we haven't had many issues with this, your satisfaction is most important. If the sprayer on your bottle stops working properly, we are happy to replace it for you free of charge. Please send an email and let us know so we can get you back on track refreshing your home and office with ROOMIGATOR.