Buying a stock mainly because price is so low is not wise...

Buying a stock mainly because price is so low is not wise investing .. catching a knife is not the same as the principle of dollar cost averaging.
I've monitored CLH for over 10 years and sold half my holdings at around $1.30, and previously at over $2. As it is now, I estimate the fair value per share is sub 10c. A quick read of the balance sheet shows that only intangibles and deferred tax assets make it nominally solvent at best. As I've discussed before, banks have left some exposure there only because the alternative was to realise a certain loss. Sure, CH may stagger on and eventually turnaround - but better to take a tax loss now (usual tax loss selling will ramp up soon!), invest that capital elsewhere, and see some runs on the board and solid prospects for growth before getting back on the CH train - even if that means buying in at 50c or more (still a historically low price). That's my view, take it or leave it.