It is now possible to find pepper sprays from hardware stores, firearms shops, and also from the supermarkets because it depends on which state you are in. Some can be bought on the internet.
These items are made from some chemical called Oleoresin capsicum which is a product of cayenne pepper. It is possible to get some pepper sprays that do not have very active OC concentration because most times the one that is active will be up to 5%.
Finding the one with perfect concentration is not easy because either is too high or too low for it to work properly.
Now there is a pepper spray with just the right amount of concentration, at 10 percent concentration which is perfect. It is called the Mace, and is manufactured by the company that has been producing self defense items for years. Mace is quite active and at 10 percent, will succeed in immobilizing the attacker in seconds.
Get to know the state laws dealing with this matter since there are some states which do not allow the mace to be carried; neither openly nor hidden. Then there are those who want you to carry a permit for it.
Some states put restrictions on the type of pepper spray that can be allowed, others require that one gets a permit but others also insist on people going to classes. It is not strange at all to find that some states do not even allow its use. For you to know exactly what the statutes are in your state, you will have to contact the local police station in order to know what is expected.
You will also note that all the pepper sprays have protection features that prevent accidental discharge as well as belt loops for easy carriage and use. Its serial number is for tracking quality.
These products go for less than $20 in most cases which is a fair rate for anyone thinking of personal safety and tranquility of mind.