as stated earlier in this thread valleyvet is out now of ivm. I had placed 2 orders this spring and received both w/o issue. I just placed an order here (www.heartlandvetsupply.com) and cannot vouch for them as I have not received, but they have a lot out of stock and many, many other places are on indefinite backorder. Get a ivm backup asap this business week if you can. Also get human grade stuff for children to have on hand either through india pharma or from your personal or online dr prescription. Good luck and God Bless.