My suggestion above needs to be modified. Those containers I used break down after a while when the sunlight gets to them. I don't know if it is the formula that the plastic is made from or not. Maybe it is designed to be biodegradable after a time. Today, I use plastic vinegar bottles once I am done with the vinegar - I use it as part of my weed killer formula. I rinse VERY thoroughly, spray the label with WD-40 and after a few weeks it peels off much easier. Then I use a soldering iron to melt holes in the side at whatever height I need. Then I rinse it even more to get rid of any residual chemicals, and then use it. So far they last considerably longer than the containers I used to use.