I got Jazz gelded at 3 months old and that was October 21st of last year. There were flies but it wasnt a big deal. Vet had me wash his area and make him run not walk for 10-15 mins a day and I didnt really need too because he did it all on his own.

I think it has made him taller, he is taller then his dam already over 14hands at 14 months old.