Grandpas Feeders 20 lb Automatic Treadle Chicken Feeder vs RUN-CHICKEN Door T50 Automatic Chicken Coop Door Opener
Head-to-head spec comparison to help you pick the right coop for your needs.

Grandpas Feeders
$189

RUN-CHICKEN
$149
Spec-by-Spec Comparison
| Spec | Grandpas Feeders 20 lb Automatic Treadle Chicken Feeder | RUN-CHICKEN Door T50 Automatic Chicken Coop Door Opener |
|---|---|---|
| Capacity | 6 hens | 8 hens |
| Material | Galvanized steel | Aluminum |
| Run Included | No | No |
| Coop Floor Area | 0 sq ft | 0 sq ft |
| Predator Rating | 5 /5 | 5 /5 |
| Auto-Door Ready | No | Yes |
| Weather Rating | 4 /5 | 5 /5 |
| Assembly Time | 0.5 hrs | 0.5 hrs |
| Price | $189 | $149 |
| Rating | 8.8/10 | 8.9/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
Grandpas Feeders 20 lb Automatic Treadle Chicken Feeder
Pros
- Treadle mechanism eliminates feed waste — hens step on the platform to open the lid
- Galvanized steel construction is rat-proof, mouse-proof, and weather-resistant
- 20-pound capacity feeds 6 chickens for up to 10 days without refilling
- Adjustable treadle weight lets you tune it for bantams or heavy breeds
- Lid seals tight in rain — feed stays dry even in uncovered runs
Cons
- Hens need 2-3 days of training to trust the treadle — some skittish birds never adapt
- At $189, it costs more than 5 years of basic hanging feeders
- Sharp edges on early production units required gloves during assembly
- Lid hinge can squeak and spook nervous hens until lubricated
RUN-CHICKEN Door T50 Automatic Chicken Coop Door Opener
Pros
- Light-sensor mode closes reliably at dusk without seasonal timer adjustments
- Battery powered with 4 AAs — no wiring, no solar panel alignment, no weatherproofing headaches
- Aluminum door and housing resist warping and freeze-jamming better than plastic competitors
- App control via Bluetooth lets you open or close manually from your phone within 30 feet
- Anti-pinch safety stop reverses the door if a hen is in the way
Cons
- Battery life is 2-3 months in cold weather — plan on lithium AAs for winter reliability
- Requires a flat, square mounting surface of at least 10x12 inches
- App has occasional connection drops on Android devices in our testing
- At $149, it is a significant add-on cost for a first-time setup
Our Verdicts
Grandpas Feeders 20 lb Automatic Treadle Chicken Feeder
The only feeder we have tested that truly stops rodents and waste simultaneously. The upfront cost is high, but it pays for itself in saved feed and eliminated pest attraction within two years.
RUN-CHICKEN Door T50 Automatic Chicken Coop Door Opener
The most reliable automatic door for the money. Aluminum construction and proven light-sensor accuracy make it our pick over cheaper plastic alternatives that jam in winter.
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