Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil. The iris contains two groups of smooth muscles; a circular group called the sphincter pupillae, and a radial group called the dilator pupillae.
Jalapeno peppers are used to flavour chilli The ingredient which makes jalapeno peppers hot also makes prostate cancer cells commit suicide, a study suggests.
We have used jalapenos with success-rub them on what you don't want them to lick/bite. Otherwise, most of that bitter spray for animals works really well (if for chewing/licking).