A female monarch lays its eggs (1) on a sprouted milkweed plant. The eggs hatch in four to five days producing tiny yellow, black and white banded larvae (caterpillars). These caterpillars (2) will feed solely on milkweed and eat enormous quantities because they are growing fast.
Roll-up door spring repair or replacement is usually around $200 - $250 for a 2 car door. If the brackets need to be disassembled to remove the springs due to the shaft not sliding sideways enough it will cost you an additional $50 - $100.
That said the average cost of garage door spring replacement is ââroughly $100 per spring. Keep in mind that while only one spring may have broken, springs are mounted in pairs; if one has broken the other may be close to doing so and should probably be replaced at the same time.