Harry Edwin Laws graduated as Bachelor of Science (BSc) and was a Fellow of the (British) Institute of Chemistry (FIC). Around 1910 he worked at the Cooper Laboratory for Economic Research in Watford, England, but probably in that same year came to South Africa to represent Cooper and Nephews, makers of sheep dip, at their property in Gonubie Park, East London. He and B. Manning published the results of an experimental investigation, "Eradication of ticks by the starvation method", in the Agricultural Journal of the Cape of Good Hope (Vol. 37, pp. 9-17) in 1910. They showed that the number of ticks (and the diseases they transmit) can be drastically reduced by periodic dipping, grass burning, and enclosing confined feeding areas long enough to starve the ticks. Laws contributed a note on the same topic to the Agricultural Journal of the Union of South Africa the next year. Subsequently he contributed three more articles to the same journal: "The tick-killing properties of sodium arsenate" and "Cattle dipping at short intervals" (1913, Vol. 5), and "How ticks are killed when cattle are dipped" (1913, Vol. 6).
A few years later W.F. Cooper and Laws published "Some observations on the theory and practice of dipping" in the journal Parasitology (1915). One H.E. Laws, presumably the same person, also contributed a paper on "Anaesthetic ether" to The Lancet (1927).
In 1910 Laws was a member of the South African Association for the Advancement of Science.