i have this plant right outside my door and it seems that green bottle flies are attracted to it. they just land on the flowers and rub around on it. i can catch them easily by just closing a deli cup on them. i tried feeding them to my L3 ghost but they wont touch them due to they're about the same size as each other. do you think when they turn L4 they will be able to handle these guys? or are my ghost just too wimpy?