Feminized seed discussion

So looking back I couldn't find information on feminized seeds. Obviously feminized seeds are not going to develop into males, however, they will hermie. What is the hermie rate? And what is the effects of hermied plants if not caught early enough? Will they contaminate everything? Just themselves? Anyways, what is everyone's experiences using feminized seeds?

I'm pretty sure its around 90% chance of females, 10% males or hermi.

Go with a breeder that carrys alot of fem strains and make sure they have a skunk strain in them. Skunk stains seem to not go hermie I grew The Church fromw Greenhouse 20 of them everyone of them was female and didnt hermie I comes to find out skunk stains can take abuse and can grow threw almost anything so they are 99% not likey to go hermie unless they almost die and revived. Its genetics man.