Residents say Birmingham shopkeepers are cashing in on the bin strikes by increasing the prices of rat poison amid the infestation.<br /><br />Locals say the cost of rat bait has skyrocketed due to demand as the ongoing industrial action which has been blighting the city enters its fourth week. <br /><br />The giant rats invading the streets have even been given the nickname of "The Squeaky Blinders" after famous TV series "The Peaky Blinders".<br /><br />Birmingham City Council has been laying on mobile bin collections in an attempt to clear an estimated 17,000 tonnes of uncollected rubbish.