Hi,
I can give you some of the basics until the people who have used it get here I think.
Always remove the waterbowl before treatment.
Always remove the snake before treatment.
Do not over use it - you don't want everything soaking wet with the product.
Make sure the product has dried thoroughly before putting either the snake or the waterbowl back in the treated tank.
Dont use it in the same room as any insects you want to keep alive.
Hopefully the better answers will be a long shortly.
dr del