Tarantula (Mexican Red Knee) — Accessories & Essentials

Safe handling and transfer tools are among the first accessories any tarantula keeper should acquire. A clear plastic catch cup paired with a piece of stiff cardboard or a flat acrylic lid forms the most reliable transfer system for moving a tarantula between enclosures. The technique is simple: gently guide the spider into the cup using the cardboard as a barrier, then slide the cardboard under the cup opening to secure the spider inside. This method avoids direct hand contact and works for tarantulas of all temperaments.

Long-handled soft-bristle paintbrushes serve as gentle nudging tools for coaxing a reluctant tarantula into a catch cup or away from an area you need to access for maintenance. The bristles are soft enough to avoid injuring the spider's exoskeleton or legs while providing enough tactile feedback to encourage movement. Brushes in the six to twelve inch range give you adequate reach without the rigidity of a metal tool that could harm the spider on contact.

Rubber-tipped feeding tongs, discussed in the food section, double as general-purpose tools for manipulating objects inside the enclosure without using your fingers. Repositioning a water dish, removing a prey bolus, or adjusting a hide piece can all be accomplished with tongs from a comfortable distance. Having dedicated tongs for each task — one pair for feeding, another for maintenance — helps prevent cross-contamination between feeder insect colonies and the enclosure.

For keepers who maintain multiple tarantulas, a set of standardized transfer containers labeled by enclosure number streamlines rehousing and maintenance. Clear deli cups with pre-drilled ventilation holes in various sizes — small for slings, medium for juveniles, large for adults — can be kept clean and ready for use. These containers also serve as temporary housing during full substrate changes or enclosure cleaning, keeping the spider secure and visible at all times.

Every tarantula enclosure requires a shallow water dish, and selecting the right one matters more than many beginners realize. The dish should be shallow enough that the tarantula cannot submerge or drown, with sides low enough for the spider to access the water easily. Ceramic or glass dishes are preferred because their weight prevents tipping, and their smooth surfaces are easy to clean and resist biofilm accumulation. The diameter of the dish should be roughly equal to the spider's body length, not including legs.

For slings and small juveniles, standard water dishes are often too large and too deep. A bottle cap filled with water and pressed flush with the substrate surface provides an appropriately scaled water source. Some keepers prefer to dampen a small corner of substrate near the sling's burrow entrance rather than providing a dish, since very young spiders can struggle with even shallow water sources. As the spider grows through successive molts, transition to progressively larger dishes.

Water quality is an easily overlooked factor in tarantula husbandry. Tap water in many municipalities contains chlorine and chloramine levels that, while safe for humans, may affect invertebrates over long-term exposure. Using dechlorinated water — either by treating tap water with an aquarium dechlorinator or by allowing it to sit in an open container for 24 hours — is a simple precaution. Distilled water is unnecessary and actually lacks trace minerals that may be beneficial.

Misting bottles are a useful accessory for managing enclosure humidity, but they should be used judiciously with Mexican Red Knees. A fine-mist spray bottle can dampen substrate, rehydrate a dry corner, or provide droplets on the enclosure walls for the spider to drink from. Avoid misting directly onto the tarantula, which can cause stress and defensive reactions including hair kicking. Pump-action misters with adjustable nozzles provide better control over spray pattern and volume than simple trigger bottles.

Keeping a supply of substrate material on hand is practical for spot cleaning and full substrate changes. Coconut fiber bricks are the most space-efficient storage option — a single compressed brick expands to fill a large enclosure and has an indefinite shelf life when kept dry. Purchasing substrate in bulk significantly reduces per-enclosure cost, particularly for keepers maintaining multiple setups. Store unused expanded substrate in a sealed container to prevent contamination and drying.

Small scoops and spoons are essential for spot-cleaning substrate without disturbing the entire enclosure. A dedicated long-handled teaspoon or a small garden trowel allows you to remove boluses, contaminated substrate patches, and dead feeder insects with precision. Disposable plastic spoons work in a pinch but lack the durability and reach of a dedicated tool. For enclosures with deep substrate, a narrow scoop that can reach the bottom without displacing large amounts of material is particularly useful.

Cleaning supplies for the enclosure itself should be simple and chemical-free. Plain water and a clean cloth handle most routine cleaning. For disinfection during a full substrate change, a dilute white vinegar solution is safe and effective — mix one part vinegar with four parts water, wipe down all interior surfaces, and rinse thoroughly with plain water. Allow the enclosure to air dry completely before adding fresh substrate. Never use commercial glass cleaners, bleach solutions, or antibacterial sprays inside a tarantula enclosure.

Disposable gloves are a worthwhile accessory, particularly when handling substrate, removing old webbing, or performing maintenance that puts your hands near the spider. Mexican Red Knees possess urticating hairs on their abdomens that they can flick toward perceived threats. These barbed hairs cause irritation on skin and can be extremely uncomfortable if they contact eyes or mucous membranes. Nitrile or latex gloves provide a barrier against hair contact, and safety glasses add protection for your eyes during maintenance tasks.

A digital thermometer and hygrometer combination unit is one of the most important accessories for any tarantula enclosure. These devices provide real-time readings of the two most critical environmental parameters: temperature and humidity. Place the sensor probe at substrate level, where the tarantula actually lives, rather than at the top of the enclosure where conditions may differ significantly. Digital units with remote probes allow you to read conditions without opening the enclosure.

Accuracy varies considerably between monitoring devices. Cheap dial-type analog hygrometers, often sold in pet stores bundled with terrarium kits, are unreliable and can be off by 15 to 20 percent. Digital units from reputable instrument manufacturers cost only slightly more and provide readings within a few percent of actual conditions. Some models store minimum and maximum values over a 24-hour period, which is useful for understanding temperature swings during day-night cycles or seasonal changes.

A small kitchen scale that reads in grams is a surprisingly useful tarantula-keeping tool. Weighing your spider during rehousing — by placing it briefly in a pre-weighed container on the scale — provides an objective measure of growth and body condition over time. Weight tracking is particularly valuable for detecting pre-molt weight gain, post-molt weight loss, and gradual changes in body condition that may indicate feeding issues. A scale accurate to one-tenth of a gram is sufficient for adult tarantulas.

A simple magnifying glass or jeweler's loupe allows close examination of the spider during observation without handling. Checking for external parasites like mites, examining leg joints for signs of injury, and inspecting a freshly shed exuvium (molt skin) for missing leg segments or abnormalities are all tasks that benefit from magnification. A small handheld magnifier with LED illumination is an inexpensive but genuinely practical addition to any tarantula keeper's accessory kit.

As a tarantula-keeping setup matures, the number of supplies and accessories accumulates quickly. Dedicated storage keeps feeding tools, cleaning supplies, substrate, and monitoring instruments organized and accessible. A small plastic toolbox or tackle box with divided compartments works well for keeping tongs, catch cups, brushes, and spare thermometer probes together. Label compartments by function to maintain organization and prevent cross-contamination between feeding and cleaning tools.

Feeder insect storage and maintenance is a category unto itself. If you keep a feeder colony, dedicated bins, heat sources, food dishes, and water gel containers all need to be stored and maintained alongside your tarantula supplies. Keeping feeder supplies in a separate area from tarantula enclosure supplies reduces the chance of mite transfer and keeps things manageable. A designated shelf or cabinet for feeder colony equipment helps maintain the boundary between feeding infrastructure and spider housing.

Record-keeping supplies, whether analog or digital, are an accessory that pays long-term dividends. A simple notebook dedicated to each tarantula — or a single notebook with sections for each spider — should record molt dates, feeding records, weight measurements, environmental readings, and any behavioral observations. For keepers who prefer digital solutions, a spreadsheet saved to a cloud service provides searchable records and the ability to chart growth data over the spider's potentially decades-long lifespan.

Spare parts and backup supplies deserve a designated storage spot. An extra water dish, a backup thermometer, a roll of ventilation mesh, spare substrate, and an emergency catch cup should always be on hand. When a water dish cracks, a thermometer battery dies, or a catch cup goes missing at the worst possible moment, having replacements ready avoids scrambling. For a pet that can live 20 to 30 years, building a reliable supply chain and keeping critical spares in stock is part of responsible long-term husbandry.

Urticating hairs are the primary safety concern when working with Mexican Red Knee Tarantulas. These barbed, microscopic hairs are located on the dorsal surface of the spider's abdomen and can be kicked off in a defensive cloud when the spider feels threatened. On skin, they cause localized itching and redness. In eyes, they can cause severe irritation and, in rare cases, lasting damage. Safety glasses or goggles should be worn during any hands-in-the-enclosure maintenance, and hands should be washed thoroughly after any contact with the spider, its enclosure, or its substrate.

Nitrile gloves are the preferred hand protection for tarantula maintenance. They provide a barrier against urticating hairs, prevent skin oils and lotions from transferring to the enclosure environment, and protect against the mild irritation that some people experience from prolonged contact with coconut fiber substrate. Latex gloves are an alternative, but some individuals are allergic to latex, and nitrile provides equivalent protection without that risk. Keep a box of disposable gloves near your enclosure setup area.

A small first-aid reference covering tarantula bites and urticating hair exposure is worth keeping with your supplies. While Mexican Red Knee bites are extremely rare — this species is exceptionally docile — a bite from any tarantula can cause localized pain, swelling, and mild allergic reactions in some individuals. Standard wound care applies: clean the bite with soap and water, apply an antiseptic, and monitor for unusual swelling or signs of secondary infection. For urticating hair exposure to the eyes, flush with copious clean water and consult an ophthalmologist if irritation persists.

Secure enclosure closures are a safety accessory that protects both the spider and the household. Mexican Red Knees are not aggressive escape artists, but a poorly latched lid or an unsecured front door can result in a loose tarantula — a stressful situation for the spider and potentially alarming for other household members. Enclosure locks, clips, or magnetic closures should be checked for security regularly. For enclosures housed in rooms accessible to children or other pets, additional locking mechanisms provide an important safeguard against curious hands or paws opening the enclosure unexpectedly.