Shake well before using. Top Paw Yard Odor Eliminator Plus with Citronella will not stain most surfaces, however it is always recommended to test the spray on a small, inconspicuous area first. Lightly mist area until offending odor is replaced with a fresh, clean and long lasting citronella scent. Use caution when spraying concrete or any other area that may become slippery when wet. For heavily soiled areas apply ample product wait five minutes and rinse area with clean water. Finish with a light. Do not rinse.