It is useless waste of time to try to exterminate with Persian insect powder, or sulphur candles. These remedies have been recommended by the International Encyclopedia, but have not demonstrated their worth when subjected to tests by careful experimental methods, by the author.

Scientific Way of Extermination.

The only scientific and practical way to get rid of them is to clean thoroughly, religiously, and scrupulously the room and every article in it. Bedbugs are exceedingly difficult to fight, owing both to their ability to withstand the action of many insecticides and owing also to the protection afforded them by the walls and the woodwork of the room.

If the mattress is old, it should be burned. The bed should be taken apart, the slats and springs taken to the bathroom and scalded, and then treated with a mixture of corrosive sublimate and alcohol, liberally applied, after which a coat of varnish should be given to the entire bed—slats, springs and all. The carpet should be taken up and sent to the cleaners. The paper should be scraped from the walls and sent to the furnace and burned, and the walls should be left bare until the bugs are exterminated. The holes in the walls and woodwork and the cracks and crevices in the floor should be filled up with common yellow soap. This is better than to fill them with putty; it is more practical and is easier to handle. Use the thumb or an old knife to put the soap into the holes; the workman should get the stepladder and go over the entire ceiling, getting the soap into every crack and crevice. After this is done, it will be impossible for the eggs to hatch or the bugs to get out. This is the most important part of the extermination of bugs. The floor should then be scrubbed, after which it should be well poisoned with the mixture of corrosive sublimate and alcohol. Every piece of furniture in the room should be washed and poisoned, and given a coat of varnish.

Treating the Mattress.

If the mattress is too good to be thrown away, the following will be found a good method to destroy the vermin in it: dissolve two pounds of alum in one gallon of water; let it remain twenty-four hours until all the alum is dissolved. Then, with a whisk-broom, apply while boiling hot. This is also a good way to rid the walls and ceiling of bugs. Getting on the stepladder, the workman should apply the wash with the whisk-broom, never missing an inch of the entire ceiling and walls, keeping the liquid boiling hot while using. It should be poured in all the cracks of the floor, in the corners, over the doors and over the windows. The operation should be repeated every day for two weeks, after which the woodwork should be painted and the walls papered.

A strict watch should be kept on all the help's rooms, and any signs of bugs should be promptly treated with the mixture of corrosive sublimate and alcohol.

Cleanliness a Necessity.

Cleanliness is a prime factor in ridding rooms of vermin. In many of the hotels there is one woman appointed to look after the bugs, and she has no other duty.

A good night's sleep is necessary to health and happiness. It can not be found in a room with vermin. The housekeeper should keep up the continual warfare against the standing army of bugs, and never allow the enemy to take possession.