Hi Debbie, I must have missed your post yesterday. I was a Licensed Pesticide Tech with the DOD (Dept. of Defense), for 4 yrs., before that an unlicensed Tech for 5 yrs. It depends on the pesticide used. Some are more residual than others. Some are watered in and some or topical, left to dry on leaves of plant or grass, etc. Fertilizers can be granules, liquid or come impregnated with other types of pesticides. So to be exact in giving you info. I would have to know what was put down. This is for anyone else who may have a question. Seedy Poo can be Giardia. Take a very fresh sample to a vet close to you and have it analyzed. Dooks [Posted in FML issue 2660]