I was out at the barn yesterday and didn't have enough time to ride, so I brought Aaspen in for a nice thorough grooming. Brushing down his legs I found a bunch of little white spots on the insides of his knees and a few up on his shoulders. This is the first time I've ever come across them, but I assumed they were bot fly eggs and set about the barn finding something to get them off with. I came across a blade looking thing and used that effectively. I googled it earlier and found out that is indeed made for just that purpose, so I'm going to go ahead and assume that bot flies have been a pretty common problem for the owner. I'd just like to know if anyone here has had issues with bot flies and exactly what kind of problems can they cause. Can they be harmful to humans in anyway? Thanks in advance, and here's a pic for good measure.