you would have to ask the store, but most likely the nursery were they got them from uses pesticides and no telling how long it remains with the plants. Best is to wash the plants thoroughly with dish soap and water and rinse well. Also change out the soil so there is no fertlilizer in it. Pothos are cham safe but I have no idea what a Jenny Craig plant is. If you have a Veild, they are plant eaters so you have to be careful bout what plants you use. Some panthers will eat plants also, but not as common as the Veilds