It can cause blindness, probably burns etc, who knows. Thats why there is warnings on them. There is more than enough UV in a normal floodlight bulb or even household bulbs for them, proven fact. Those real UV bulbs are for killing bacteria, virus, mold, etc. I would never put one in a cage. Theres a test that was done on UV bulbs in Australia in a lab, the results given showed that measureable UV from reptile UV bulbs was so miniscule, and that a normal blacklight produced many many times the UV, why they have warnings on them about eye and skin exposure, as they always have. What do you think reptile keepers, breeders, and zoos used before UV lights were sold? Actually I believe the Vitalight got the whole craze on them started, its a marketing ploy to sell overpriced bulbs. If they convince you that your reptile needs a new one every 6 months, then your local petstore/supplier makes a very very healthy profit from them. Those reptile UV bulbs cost you $21-$50 plus, the petstore buys them for $2-$7, the only difference between them and normal lights sold in any store is the label and the price, and theyre are not very durable (thats so you buy them more often).

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