Shih-Tzu Severe Reacion

Mine is typical.  Purchased Sargeants Gold Flea Drops at Wal-Mart.  Put it on both dogs, Ricky and Lucy at about 4:15 PM, and by 6:00 PM both were in convuslions.  I took them in the shower, washed Lucy first, Ricky second, and meanwhile my wife Allison came home.  Lucy did not improve so she took them to the emergency vet service, just around the corner.  She called me after 20 minutes to let me know that I had done the correct thing by washing both dogs.  The vet gave Lucy intravenous injections of Benadryl and a muscle relaxer.  I took Ricky to the vet about 20 minutes later, because his symptoms did not become as severe immediately.  Ditto on the intravenous Benadryl and muscle relaxer.
$320 later we left the vets, took the dogs home, and they slowly became better, although I gave them more Benadryl and a couple of doggie tranquilizers that we use for firecracker days, like the 4th of July and New Years.
As a side note, Benadryl is made in a quick dissolve strip that can be cut with scissors to get to the correct dosage, about 1/8 of a strip per dog for my dogs based on their weight, about 13 pounds each.
Good Stuff.
Next day, went to Wal-Mart to see if I could get that stuff pulled from the shelves, but no.  However, the store manager requested that I fill out a Product Liability Form, which they then follow up with the product manufacturer to provide some level of fix for a problem.  Wal-Mart Claims Management sent a letter which I followed up on with a phone call.  They have faxed the claim to Sargeants, and have assured me that they will follow up to make sure that something (?) happens.
At the very least, I’d like to get that product removed from the shelves of Wal-Mart, and if I can, that will hurt the manufacturer where they live.  I’m waiting on a phone call from Sargeants to see what happens.
Please stay tuned..
Thanks for your caring,
Herb Stephen
Palm Harbor, FL