Last year I swapped out a lot of light bulbs in my house with Costco LED bulbs (+50% reimbursement from my utility!), but I didn't change any of the bulbs in enclosed light fixtures. The packaging warns against putting the bulbs in enclosures, presumably because they generate heat and the electronics on the bulb are sensitive to high heat?
Should I ignore this warning and not worry about it? About half of the bulbs in my house have yet to be changed over, and while I have the rebate I'd love to get some more for ~$1.50 each.