602 IOWA DEPARTMENT OF AGRICULTURE 



Another favorable agent is cresol (commercially known as liquid car- 

 bolic acid.) It is not as soluble as liquor crtsoLs compositus and should 

 be tborouglily stined during the proctss of mixing, which will be taciu- 

 tat.cd by usiug hot water. It is advisable to secure a giade of the drug 

 with a guarauiy of 95 per cent pure, and such should be used in the 

 proijonion of 2 or 3 ounces to a gallon of water. 



As an accessoiy preparation and for use after the application of the 

 disinffcCi-ant it may be advisaole to make ready a lime wash to each gal- 

 lon of Wiiich thbie has been added 4 ounces of chlorid of lime, or if it 

 appears desirable to use the disinfectant and lime wash at one applica- 

 tion, the toliOVv'ing method may Lie foUowed in preparing 5 gallons: fcJiake 

 TVz pounas of lime, us^ng hot water if necessary to* start action. Mix to 

 a creamy considtency with water. Stir in 15 fluid ounces of cresol (com- 

 meiciaiiy known as liquid carbolic acid) at least 95 per cent pure, and 

 make up to 5 gallons by adding water. In case compound solution of 

 cresol iliquor cresoiis compositus) is used, add 30 fluid ounces instead 

 of 15 as in the case of cresol (liquid carool-c acid). Stir thoroughly. 

 If to be applied through a spray nozzle, strain through a wire sieve, btir 

 frequently when applying and keep covered when not in use. 



In case a large surface is to be disinfected it wiil be advisable to pre- 

 pare a lioeral amount of the dis-nieciing solution before beginning the 

 application. Such solutions, however, siiould not be permitted to remain 

 in receptacles which are accessiule to animals. 



METHOD OF APPLICATION. 



The efficacy and economy of the work will depend in a great measure 

 upon the method of applying the disinfectant. Economy requires that the 

 disinfecting solution be appLed rapidly; efliciency requires that it be not 

 orriy spread in such manner as to cover the entire suriace requiring dis- 

 infection, but that suhicient quantity and force be used to drive the 

 solution into all ciacks and crevices. 



"Where a veiy limited surface is to be treated, as, for example, one stall, 

 it may be possible to apply the disinfectant in a satisfactory manner by 

 means of a whitewash brush. In all cases, however, the best method of 

 applying the disinfectant and the lime wash is by means of a strong spray 

 pump. Such should be equipped' with not less than 15 feet of hose, to 

 which may be- attached a 5-tcot section of iron pipe of the same caliber. 

 With a spraying nozzle at the end of the pipe the operator will be enabled 

 to pioceed with the greatest possible dispatch and the least possible in- 

 convenience. 



The entire interior of the stable should be saturated with the disinfect- 

 ant. Special attention should be given to the feeding troughs and drains. 

 After this has dried the surface may be sprayed with lime wash, provided 

 this has not been combined with the disinfectant; and when this process 

 has been completed it will be advisable to open all doors and windows of 

 the building for the admission of air and light. 



