I have 2 10 month old male american bull dogs,they are well trained but for the last few weeks they keep peeing,pooing and are destroying everything I came home today to find they had ripped up my kitchen floor they have kong toys chew sticks etc nothing has changed and I have not been away anywhere and they are not alone for long,they will do it if I'm there or not I must add I've had dogs for all my life and have never had this problem before but then I've never had this breed before,they have praise treats when they go outside and a telling off when they do it inside but I really don't know what to do and I certainly don't want to rehome them as I have a disabled daughter with severe epilepsy who they watch over kind of like a doggy nanny lol and she adores them both but it means I have to watch her more in case they pee etc where she may go... please help.

It sounds like you should look into crate training your dogs.
Here's some information: 01 Crate-Training for Adult Dogs - VeterinaryPartner.com - a VIN company! (http://www.veterinarypartner.com/Content.plx?P=A&A=1694)

Bull dogs don't outgrow there chewing till they are 2 years old so unfortunately there is nothing you can do about that but the pooin and peeing is a competiontion to be alpha