Q: Depending on the types of owls that inhabit your region, you'll need a box that is suited to those specific owls. This is important, as owls vary greatly in size and behavior. If you don't have the right box, you won't be able to attract owls to your property. Use this chart to determine the appropriate size of box for the type of owl in your area: http://www.audubon.org/sites/default/files/documents/nest_box_chart_0.pdf Look for a location near a field, meadow, or another open area. In addition, choose a location that does not have much man-made noise. An area far from a road will work well. Avoid placing owl boxes above cars, tractors, or farm equipment. Don't put boxes too close together. Although owls aren't very territorial, putting boxes nearby could discourage multiple owls from nesting there. If you're trying to attract barn owls, you can attach the box to the inside of a barn or the outside of your home. Attach the box to a tree, pole, or structure that is at least 10 feet (3 meters) off the ground. In addition, the entrance must face any direction but north. If the box is too low, it might make an easy target for predators trying to eat owl chicks. If the box faces north, it will be exposed to cold northerly winds. Use 2 or 3 2-inch wood screws (5 cm) to secure the box to the tree or structure. The box should be able to support up to 5 lbs (2.25 kg). Make sure the box entrance is clear and faces an open area. Fill the box with 2 or 3 inches (5 to 7.5 cm) of untreated wood shavings. The wood shavings will serve as nesting material for owl chicks during the spring time. It will also provide warmth for more mature owls during the winter. Use several wood screws to secure a stick or small board to the outside of the box. This will allow the owl to perch in front of the box. It will make the box a much more attractive home site.
A: Build or buy an appropriate box. Find a good location for the box. Position the box properly. Place wood shavings in the bottom of the box. Add a stick or a small board on the outside of the box.

Q: Pay particular attention to any fruits and vegetables you have out. As they begin to decay, they attract gnats and other bugs like fruit flies. The only way to ensure gnats can't survive in your kitchen is to sort through this food and throw away anything that has begun to spoil. Get rid of anything that appears to have bite marks on it as well. Gnats feast on organic material, so anything that comes from plants could be a food source. That includes fruits, vegetables, and roots. Make sure the gnats have nothing to eat. It will starve them and force them toward any traps you have out. Keep your dry goods well-sealed in plastic containers. Store them in cupboards or the refrigerator for additional safety. If you notice any food that has been infested by gnats or other insects, slip it into a resealable plastic bag so the bugs can't get back out. Then, dispose of it in the trash. This can include water glasses, pet bowls, and planting pots. The gnats will take advantage of these to lay their eggs. You can get rid of them by draining the water each day. Refill bowls and glasses only when you're using them. Move your pet's water bowl to a room that doesn't have any food in it. Remind other people to avoid leaving water glasses out while you treat the kitchen for gnats. Keep the trash in a trash bag inside a covered garbage bin until you are able to throw it out. If you have to throw away rotting food, old soil, or anything else that could attract gnats, get rid of it as soon as possible. Take advantage of your neighborhood's waste disposal service or move the trash out of your kitchen until you can get rid of it for good. Remember to keep trash bags far away from your kitchen if you are unable to get rid of them right away. This is especially true if you have to get rid of decaying fruit or other things gnats like to eat.
A: Scan your kitchen for any food that has been left out. Store dry goods in sealed containers for protection. Pour out any standing water that could attract gnats. Take out the trash when it becomes full.

Q: Make sure that the photo lends itself to color inversion. The change will be most dramatic if the image is very dark or very light. Understand that the inversion will replace each color with its corresponding opposite: the brightness value of each pixel is converted to the inverse value on the 256-step color-values scale. Think about whether the photo will be more or less powerful, once inverted. If you aren't sure, it can't hurt to try! Open the "Window" menu, then choose "Layers" to reveal the Layers panel if you can't already see it. Remember; you are not actually changing the colors of the original image file you are creating a color-inverted layer on top of the base. If you want to invert the colors in a specific section of the image, use the selection toolsMarquee, Lasso and Magic Wandto mark out the part that you wish to invert. If you want to invert the colors across the entire image, then you don't need an active selection. If you're inverting a complex composition, you can add a new layer at the top of the layer stack. Then, press Shift+Ctrl+E to create a merged version of your entire composite without changing the deeper layers. Click on the unlabeled "Create New Fill or Adjustment Layer" button at the bottom of the Layers panel; you can find the correct button by hovering over the options. Choose "Invert" from the drop-down menu that appears. Photoshop adds an "Invert Adjustment" layer to your layer stack immediately above either the topmost layer or the layer that was active when you added the adjustment. If you made a selection before adding the adjustment, Photoshop builds a layer mask for the Invert layer. The program inverts the colors in the area that you selected. Drag the Invert layer up or down the layer stack to a new position. Any given layer only acts upon the layers below it, so the inversion's position in the layer stack determines its impact on your file. Shift-click on the layer mask applied to your Invert adjustment layer to disable the mask and apply the adjustment to your entire file. Click on the layer mask icon to enable the adjustment again. Turn off the eyeball indicator at the left edge of the Invert layer listing to disable the adjustment itself. After inverting an image, select Create New Snapshot. Keep each image open in a separate tab. This way, you can work with both the original image and the inverted image.
A:
Open an image in Photoshop. Open the Layers panel. Invert the image. Arrange the inverted layer. Toggle the inverted layer on and off. Try working with the inverted and non-inverted image side-by-side.