Toxic Waste is a recurring hazard in the Crash Bandicoot series.
Toxic waste is a hazard in the Cortex Power Factory, where there are several pools of it. Also, hopping over it will give Crash a green color shade. In this game, it is found in the levels Cortex Power and Toxic Waste. It can also be seen in the background of Pinstripe's boss fight, but it is not a hazard there as it is in an inaccessible area behind glass.
In Toxic Dash, the arena is surrounded with waste and there is a pool of waste in the center of it, where a sludge monster arises.
Toxic waste is scattered everywhere in the level Boiler Room Doom, where Crash must keep Dr. Cortex from falling in it. It is also found in small pools in Classroom Chaos. Crash is then pursued by a large rising pool of it.
Toxic waste is found where the Sludges are first found in the level Operation Overboard, where it will cause a small amount of damage that recurs over a moderate period of time after leaving the waste (similar to being poisoned by a Sludge). Sludges are immune to it. Blocks of toxic waste that look like they are made of the same waste as Sludges are found in some levels, blocking the way forwards. These blocks can only be destroyed by Sludges, but do not hurt others that touch them. It also appears in the level Calamityville Horror.
Like in the previous game, waste is found in small pools in the Junkyard, and it is also sprayed out, which will even hurt Sludges.