yes i use both, but peroxide should only be used if the wounds go stinky, tell your mate to cut his finger and then pour bleach on it and see how he likes it , after all its only bleach
diluted bleach is the best for cleaning wounds.you only need a small ammount IT DOESNT STING THE DOG. i have washed my own cuts in the same soloution as i use for them. it works a treat