Are you "contagious" for?

I took DD to the Ped today as she was itching her head and I wasn't sure that it was just dry scalp...turns out it was nits!! yeuch...our second dose this year.

So we all did the shampoo treatment - the kids are still under their caps as theirs is a 4 hour treatment - may leave it on overnight and do their combing in the morning as I will be up all night otherwise.

So I have some questions....
If I wanted to take them to the beach in the morning would that be okay? I mean if they meet with other kids is there a chance they could pass it on? they are not likely to be rolling in the sand with them but still.

I had a long overdue hair appointment scheduled for saturday - color and cut..I cancelled it on the way home from the PED today but am wondering now if I was too trigger happy and if I should have just kept it...I have done the treatment too so when I out of the woods and allowed back into society?

Off to do round 4 of probably 50 loads of laundry.....agggghhhhhhhh!