Meticulously scrubbing and cleaning what you feed to your Discoids is vitally important. We recommend a big splash of White Vinegar in your cleaning water and a good scrubbing sponge! Why is this important? Farmers use pesticides to keep insects of their harvest and roaches are considered ... you guessed it... Pests! While it may not hurt you to eat as salad that hasn't been washed, this kind of thing could decimate your entire colony as even tiny amounts can be deadly to your Discoids.