A WARNING TO FISH/SHRIMP PEOPLE! WASH YOUR HANDS BEFORE WORKING IN YOUR TANKS! ESPECIALLY AFTER TOUCHING ANIMALS TREATED FOR FLEAS! Just got home from a really stressful day at work(I'm a dog groomer) and decided to do a water change on the tank to relax. Shortly after I took about 4 gallons out of my 15 gallon and start picking out the hair algae, the shrimp started seizing. Apparently I didn't wash the k9 advantix from my last dog off of my hands well enough and I just nuked my inverts. I know better, but I was so tired that I made a stupid mistake. Always wash your hands, especially after touching animals that have been given flea treatments, or spraying insecticides or copper fungicides. Inverts are especially sensitive to both insecticides and copper. I may lose all of my stock because I made a stupid mistake. Sharing this in hopes that it will prevent at least one person from making the same mistake. I know most people treat their pets at home with flea preventatives, especially this time of year. I've done two 4 gallon water changes already and will probably do another again shortly. No change in behavior in the white clouds or pygmy cory.