Perhaps for now you could print off:-
Benefits of Neutering (males):
Reduces or eliminates risk of spraying and marking
Less desire to roam, therefore less likely to be in road traffic accidents, injured or cause injury to others in fights .
Decreases aggressive behaviour.
Benefits of Spaying (females):
No heat cycles, therefore males will not be attracted.
Risk of mammary gland tumors, ovarian and/or uterine cancer is reduced or eliminated. Even one season increases the chance of cancer later in life, Cats will not acquire pyometra a life threatening infection.
Neuters & spays reduces the risk of the feline equivalent of aids and leukaemia for males and females
Reduces the number of unwanted cats/kittens. Many go on to lead very short sad lives.
Helps cats live 3 – 5 YEARS LONGER, healthier lives.