Magnetic door stop? Do they lose their magnetic sucking power very quickly? or do they last a fair bit? or last forever? How long do they last? Worth it? http://www.bunnings.com.au/door-stop-magnetic-adoored-extender-sc-t0910_p3961386 (Tenants' too stupid (single digit IQ) to use sand bag door stop provided... other tenants complained it's like a war zone when the wind blows the doors shut.)
Anything that provides a solid means of the door handle from hitting the wall is good. We used to have different ones that squeaked as the parts came together and I prefer the magnetic ones.
That won't stop the door being flung open and the door knob damaging the wall. And I'm too lazy to bend down several times a day to latch it. Most tenants wouldn't use those (and I'm speaking from experience).
We bought a similar "adoored" one from Bunnings (although the end bit on the door is more rounded than in your link) and it works fine. From my hazy memory of physics - magnets can lose their magnetism over time via heat or a huge shock (eg being hit with a hammer). Under normal use, these doorstops should be just fine.
Not the one In your link. That holds it in place but doesn't stop doorknob damage from a door flung open against a wall .
We had 3 doors with magnetic doorstops at our PPoR. They were excellent for stopping these doors from slamming shut if a breeze caught them. We were in the house for almost 4 years, and never noticed any deterioration in the magnetic strength.
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