Hello. First time on board. I have a white vinyl sided house. I have what appears to be the artillary fungus and insect/spide pooh on 2 sides of my house (Front & 1 side). Very very hard to remove. Have to pay a commercial siding cleaner to do so. I have read several discussion on what it may be. My question, how can I prevent the spider/insect pooh ? Is there a pesticide or something ? I recently took up the mulch around my house and replaced with brick chip to hopefully control the artillary fungus. Any help is appreciated. Thanks.