We can supply a range of other top grade tanks so please call anytime for a chat ! Contact us anytime, whenever you need us. For help with remodeling or new construction, contact pdq today! Bleach is one of the most toxic substances you can use as a homemade drain cleaner however, when a drain is severely clogged, bleach may be your only hope. Those with fairly reliable boilers and a home insurance policy which covers home emergency call-outs.