I think I need to chime in here. The Heating Pad I use isn’t designed for brooding, and I’ve never claimed that it was. It’s a Heating pad designed to be used by humans on human aches and pains. I prefer the Sunbeam X-Press Heat, with the “Stay On” switch.
I always stress basic safety. Any electrical appliance, from a coffee pot to a phone charger, has the potential to start a fire. Wires within a wall can smolder or short out and start a fire, even with nothing plugged in. Correct precautions must always be taken, following common sense precautions like using a correctly-rated outlet, protecting all connections from dust and moisture, and connections firmly in place. I never recommend using an older pad that has been rolled or folded in the back of a linen closet for years. The tiny wires inside can become brittle with age, developing tiny crack or even breaks, and when put under an electrical load they can short out. When we’re using them on us, it’s not a big deal. We can feel hot or cold spots or detect an unusual odor and unplug the pad. When that pad is in a different room or even outside, we have no way to know until the Issue becomes critical. Mama Heating Pad is reliable and is every bit as safe as some methods, and safer than others. But it is not accident proof!!!
See my comment above.
My cave isn’t as high now as it was when I first started using Mama Heating Pad. I don’t use the higher U...it’s more flattened to give the chicks heat directly at the level of their backs when they are standing. The MHP thread started as a way foe to document what I was doing. As such, when I made changes in the setup or configuration, or others made modifications that worked (or didn’t) the thread evolved.
After my little granddaughter burned her arm on the heat lamp the first time we raised chicks, I swore I’d never use another heat lamp. If I couldn’t find a better way to raise chicks, I’d never raise another batch. I was right there next to Katie when it happened and I will be haunted by those huge tears in her big blue eyes every time I think about that first batch. I thought about a commercial brooding plate, but our budget was tight and I could not justify spending that kind of money on something that I’d only use a few weeks every year, maybe even every couple of years. I did a little research, talked at length about it with Beekissed, who had been using something similar, so Mama Heating Pad was born.
I‘m trying to remember now but I think the biggest batch of chicks I raised was maybe 17, with the large size pad, (12x24) and they did fine. Remember that, except for after dark, they not all under there at once anyway. By about 2 weeks, they’ll often snuggle on top or beside it for naps and occasionally even all night, if ambient temperatures are mild. By 3 weeks my heating pad is down to temp setting one, even outside in temps lower than most people are comfortable with chicks being out. By the end of that 3rd week or into the 4th, the entire brooder is torn down and they are on their own. I didn’t just remove heat based on a calendar.....they weaned themselves off, because they’d been self-regulating so well.
I’ll be candid, as I always try to be with MHP, and say straight up that it’s not perfect. Personally I think trying to raise 20 chicks under the large pad is pushing it. I know I often thought the 17 or so I had in that one batch was stretching MHP’s limits, although they did just fine. But I must also say that if there’s a closer duplicate to a broody hen, I haven’t found it yet.