Help! My horse has bot eggs on his legs!?

i use my fingernails to pick them off. you can use bot knifes or blocks but even though i buy that stuff i still find myself picking them off by hand when i see them. if you deworm every 2 months you should be good. i use invectrim paste in the fall worming schedule. this is the time of year bot flies lay eggs totally normal but just pick as many as you can off and when you use fly spray make sure you are spraying his legs and belly as well as the usual places which will prevent them from laying eggs. good luck