Quality or delivery issues. The first batch of 10 we bought for the church worked well. Then we bought the second batch of 10 and they turned out to be junk. I went through them quickly as it took 2-3 lightbulbs to find one that was on all the time.
Philips Alto PL-C Energy Saving Compact Fluorescent π‘ Light Bulb: 1800-Lumen, 3500-Kelvin, 26-Watt, 4-Pin G24-3 Base, Daylight
6 Review
TCP CFL Double Circle Lamp, 200W Equivalent, Bright White (3500K) T6 Circline Bulb
8 Review
Sylvania 20318 Compact Fluorescent 4 Pin Single Tube 4100K, 13-watt: Efficient Lighting Solution for Any Space
10 Review
π‘ Compact Fluorescent Light Bulb T2 Spiral CFL - 4100K Cool White, 13W (60W Equivalent) - Pack of 2
6 Review
Illuminate Your Space In Style With I-SHUNFA'S Stained Glass LED Light Bulbs - Perfect For Home, Parties, And Festive Occasions
14 Review
Luminescent lamp Camelion 11066 ultraviolet, E27, 26 W
12 Review
Set Of 4 Geeni Prisma Wi-Fi Multicolor LED Light Bulbs, 1050 Lumens, 2700K, Dimmable, No Hub Required, Compatible With Alexa And Google Assistant, 75-Watt Equivalent
41 Review
E12 T22 Low Voltage Edison Bulb LED 12V-24V Vintage Tubular Night Light Bulb 1W 100 Lumen LED Candelabra Light Bulb 2700K 10W Equivalent Small Filament Bulb For RV,Out Door String Lights, Pack Of 25
15 Review