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In addition, this calculation must take into account the size of your garden, the weather conditions and the amount of water required by your plants. If you have the privilege of a very large garden, I recommend a larger rain barrel.
Generally, it depends on the area you live in. If you live in places where a lot of frost is to be expected, you should empty your barrel. Otherwise, the rainwater can remain in the rain barrel throughout the winter.
However, it is important that you do not fill the rain barrel to the top, as the ice can expand and cause damage.
On the other hand, you can fall back on the professional version. There are special rain barrel connectors for this, which you can get in any DIY store, garden centre or at Preis.de.
For example, vegetable oil or washing-up liquid is suitable for this. Simply add a few drops to the water-filled rain barrel and the mosquito larvae will die.
You also have the option of buying special preparations to combat mosquito larvae.
However, if you need even more power and have adequate storage facilities when not in use, I recommend a garden pump or a domestic water pump. You will also need to provide a place for these pumps that is protected from the wind and weather. In addition, the high effort of commissioning is to be considered with these pumps.
If it is made of metal, you have to dispose of it via scrap metal or scrap metal. Here, too, you have the option of taking it directly to the landfill. Under no circumstances should the metal rain barrel be disposed of in the household waste. This can sometimes lead to the waste disposal company refusing to collect all the waste.