Keep out flies and mosquitoes by screens, but see first that your premises are clean, and do what you can in the whole neighborhood.
Flies breed in dirty stables and mosquitoes in standing water. The stables must be cleaned and kept so, and water drained off or kerosene put upon it. Mosquitoes will breed in water in an empty milk bottle or old tomato can. If flies enter the house, kill them in some way. Wire or net fly killers cost only ten cents, and do good work. If the flies are very numerous, catch them in wire traps, or burn pyrethrum powder in the room. At night when they are on the ceiling, catch them in a glass of hot water and soap, not quite full, by holding the glass under the fly and gently knocking the glass against the ceiling. If the ceiling is high, tack an empty can on the end of an old broom stick and set the glass in that.
Clothing moths are kept out by precautions already mentioned.
If bed bugs appear, go over the bed with great care and examine the bedstead. Wash it off with kerosene, putting this well into the cracks. A single insect may be brought in on the clothing. If they continue to appear, all wall paper should be removed, woodwork varnished or painted. It may be necessary to resort to fumigation, but this should be done by an expert. Croton or water bugs are difficult to destroy, if they are once in a house. No garbage should be left about, to attract them at night. There are powders that drive them away, and another remedy is sulphur paste, which comes for the purpose, and which may be spread on slices of potato. The U. S. Department of Agriculture issues free bulletins on the suppression of household insects.