snake or rat in the attic(recomendation please)

Firstly, you do need to inspect to see what is in the attic. Look for things like feces or grease marks. For snakes in particular, you can look for scale covers that they have shed. We do advise that you seek a professional to help you inspect your home. Treatment methods will drastically differ depending on the target pest. Typically, glue boards or snap traps will be used for rodents inside a house.