Milly & Izzy love treats, they have Greenies in Chicken, Tuna & Salmon, they also like the soft Whisker Lickin's in Chicken & Salmon and they also have tried the Party Mix you mentioned.
They get their treats at bedtime & when they get their harnesses off after being out in the yard.
They both meow & sit up and beg for them & Milly can high five too.