I agree with what everyone is saying but with my STOP hand style, my little agressive bitter is now a big puppy dog, he doesnt get in the S or anything, doesnt strike at me doesnt hiss, he knows when daddy opens the tub its time to come out and explore, like starmom said just get them in a routine, try to feed on the same days as well becusae trust me they know what day is feeding day, plus if you present the room they will then be ready to eat, and on the other days that there isnt rat smell in the air they will know when that tub opens its time to come out and play. good luck