Concrete washout bins can be fitted with liners, filters, and locking lids to prevent theft, unauthorized dumping

https://wet-concrete-wastelzzt088.yousher.com/how-concrete-washout-containers-reduce-jobsite-mess-and-environmental-risk

Concrete washout bins can be fitted with liners, filters, and locking lids to prevent theft, unauthorized dumping, and accidental spillage during transport or heavy rain.