What type of first aid to have for living with kids in Costa Rica?

[gr8fulmom]

Hi there... we are living half the year in the southwest of Costa Tica (on the Pacific Ocean) where there are several venomous snakes including fer de lance. I have three young boys who tend to go intoplace which most adults do not and I am concerned to have the right information and items on hand in teh worst case scenario on a snake bite. Some friends had recommended the extractor but in researching it I stumbled upon these forums and am now thinking it is not the best first aid for snake bites. So, what would you experts suggest? We have educated our kids about snake saftely (avoiding high risk areas like piles of wet leaves, and never touching a snake even when they 'think' its dead etc.). But I would like to know the proper first aid procedure for snake bites, and also to know what if any items I could keep on hand to help in an emergency (we are around a 1 hour drive to a hospital that has anti-venom). Also, is there any other general advice you guys might have...

Thanks!!!

Jen