If you can afford it, just toss the pot. There could be eggs somewhere and why risk it? The roots look great, Anne. I bet you got those pests. Just, please remember to treat this plant again every seven days for at least three weeks (four would not hurt!). Those pesky critters like to hide where we cannot get at them and then when there are a gazillion of them again, they show up and laugh at us. Best of luck!