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A portable patternator can be used to check spray uniformity . Pesticides must be mixed in sufficient liquid carrier to get uniform recommended coverage over the sprayed area . ( Slide newspaper under the cord when you spray , as these sprays can have an alcohol base which may damage some surfaces . " We had to get the wasp out or it might sting the kids , but we could n't use the spray because it 's slightly noxious , " he said . One of the greatest concerns about chemical weed control among pasture managers is the loss of legumes from the pasture if broadleaf weeds are sprayed . To kill the larvae before they enter the fruit , chemical sprays for CM must be initiated before eggs hatch . Then more anesthetic is sprayed through the bronchoscope to numb the vocal cords . We set up trials to compare the effectiveness of single sprays of Agri-Mek ( 20 oz plus 1 gal summer oil / acre ) applied at different intervals after petal fall : 15 , 30 , and 45 days , compared with a Mitac 50 WP standard . The spray application rate ( gpa ) is a function of the flow rate per unit of boom width , which is determined by the number of nozzles per unit of boom width and the flow rate delivered by each nozzle . Force escalates from there to polite verbalization ( for instance , persuasively asking someone to do something ) , strong verbal commands ( direct orders in a commanding voice ) , firm grips on parts of the body ( for example , moving someone along by gripping the elbow or shoulder ) , pain compliance techniques ( hammerlocks or finger grips , for instance ) , impact techniques ( for example , with kicks or batons ) , use of less-than-lethal weapons ( chemical sprays or electronic stun guns , for example ) , and use of deadly weapons ( discharge of firearms ) . Spraying the adult stage is not an effective strategy for prevention of white grubs . The animals here produce around 35 tons of excrement a day , which roils in its own gases in the cesspool before some of it is sprayed , untreated , onto nearby hay fields owned by Cook . Sweet corn producers saved about $ 280 to $ 500 in chemical and operating costs per farm and cut three to four pesticide applications in early corn by using a monitoring and spray program . If you have athlete 's foot , over-the-counter antifungal creams and sprays may solve the problem . FY 2006 , the program will continue moving towards a " maintenance spraying " phase that will strive to keep illicit crop production from reemerging - a step that is likely to involve as many , if not more flight hours as drug plantations become smaller and more dispersed . Application equipment generally arrives set up with a particular nozzle spacing that is typical for the type of spraying to be performed ( i.e ., row crop sprayer , floater , etc. ) . Apply a ready-to-use aerosol " wasp and hornet spray " into the entrance of the nest during late evening according to label directions . Nevertheless , terminal infestations 2-3 weeks after applications began were disquieting enough that a number of growers were unable to avoid spraying them out with a contact toxicant , and even those who held to the 3-spray program still came away with more damage than they were expecting . Reefs are smothered in sediments and fertilizers , poisoned by oil and sewage , bombed with dynamite by desperate fishermen , and sprayed with cyanide by divers stunning reef fish for US aquariums and expensive live fish restaurants in Hong Kong . Spraying for spiders in these areas may actually increase the number of pests by killing off other natural enemies as well .